diff --git a/source/Octopus.Client.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress..NETCore.approved.txt b/source/Octopus.Client.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress..NETCore.approved.txt
index bfb0cc9b..a1f79479 100644
--- a/source/Octopus.Client.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress..NETCore.approved.txt
+++ b/source/Octopus.Client.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress..NETCore.approved.txt
@@ -37,6 +37,7 @@ Octopus.Client
     Task Delete(String, Object, Object)
     Task Delete(String, CancellationToken)
     Task Delete(String, Object, Object, CancellationToken)
+    Task<TResponse> Delete(String, Octopus.Client.TCommand, CancellationToken)
     Task<TResponse> Do(Octopus.Server.MessageContracts.Base.ICommand<TCommand, TResponse>, CancellationToken)
     Octopus.Client.IOctopusSpaceAsyncRepository ForSpace(Octopus.Client.Model.SpaceResource)
     Octopus.Client.IOctopusSystemAsyncRepository ForSystem()
@@ -81,6 +82,7 @@ Octopus.Client
     Task<TResource> Update(String, Octopus.Client.TResource, Object)
     Task<TResource> Update(String, Octopus.Client.TResource, CancellationToken)
     Task<TResource> Update(String, Octopus.Client.TResource, Object, CancellationToken)
+    Task<TResponse> Update(String, Octopus.Client.TCommand, Object, CancellationToken)
   }
   interface IOctopusAsyncRepository
     Octopus.Client.IOctopusSpaceAsyncRepository
@@ -99,6 +101,7 @@ Octopus.Client
     Octopus.Client.TResource Create(String, Octopus.Client.TResource, Object)
     Octopus.Client.TResponse Create(String, Octopus.Client.TCommand, Object)
     void Delete(String, Object, Object)
+    Octopus.Client.TResponse Delete(String, Octopus.Client.TCommand, Object)
     Octopus.Client.TResponse Do(Octopus.Server.MessageContracts.Base.ICommand<TCommand, TResponse>, CancellationToken)
     Octopus.Client.IOctopusSpaceRepository ForSpace(Octopus.Client.Model.SpaceResource)
     Octopus.Client.IOctopusSystemRepository ForSystem()
@@ -120,6 +123,7 @@ Octopus.Client
     void SignIn(Octopus.Client.Model.LoginCommand)
     void SignOut()
     Octopus.Client.TResource Update(String, Octopus.Client.TResource, Object)
+    Octopus.Client.TResponse Update(String, Octopus.Client.TCommand, Object)
   }
   interface IOctopusClientFactory
   {
@@ -315,6 +319,7 @@ Octopus.Client
     Task Delete(String, Object, Object)
     Task Delete(String, CancellationToken)
     Task Delete(String, Object, Object, CancellationToken)
+    Task<TResponse> Delete(String, Octopus.Client.TCommand, CancellationToken)
     void Dispose()
     Task<TResponse> Do(Octopus.Server.MessageContracts.Base.ICommand<TCommand, TResponse>, CancellationToken)
     Octopus.Client.IOctopusSpaceAsyncRepository ForSpace(Octopus.Client.Model.SpaceResource)
@@ -360,6 +365,7 @@ Octopus.Client
     Task<TResource> Update(String, Octopus.Client.TResource, Object)
     Task<TResource> Update(String, Octopus.Client.TResource, CancellationToken)
     Task<TResource> Update(String, Octopus.Client.TResource, Object, CancellationToken)
+    Task<TResponse> Update(String, Octopus.Client.TCommand, Object, CancellationToken)
   }
   class OctopusAsyncRepository
     Octopus.Client.IOctopusAsyncRepository
@@ -457,6 +463,7 @@ Octopus.Client
     Octopus.Client.TResource Create(String, Octopus.Client.TResource, Object)
     Octopus.Client.TResponse Create(String, Octopus.Client.TCommand, Object)
     void Delete(String, Object, Object)
+    Octopus.Client.TResponse Delete(String, Octopus.Client.TCommand, Object)
     void Dispose()
     Octopus.Client.TResponse Do(Octopus.Server.MessageContracts.Base.ICommand<TCommand, TResponse>, CancellationToken)
     Octopus.Client.IOctopusSpaceRepository ForSpace(Octopus.Client.Model.SpaceResource)
@@ -480,6 +487,7 @@ Octopus.Client
     void SignIn(Octopus.Client.Model.LoginCommand)
     void SignOut()
     Octopus.Client.TResource Update(String, Octopus.Client.TResource, Object)
+    Octopus.Client.TResponse Update(String, Octopus.Client.TCommand, Object)
   }
   class OctopusClientFactory
     Octopus.Client.IOctopusClientFactory
@@ -4193,6 +4201,7 @@ Octopus.Client.Model
     static Octopus.Client.Model.Permission DefectResolve
     static Octopus.Client.Model.Permission DeploymentCreate
     static Octopus.Client.Model.Permission DeploymentDelete
+    static Octopus.Client.Model.Permission DeploymentFreezeAdminister
     static Octopus.Client.Model.Permission DeploymentView
     static Octopus.Client.Model.Permission EnvironmentCreate
     static Octopus.Client.Model.Permission EnvironmentDelete
@@ -6393,10 +6402,37 @@ Octopus.Client.Model.DeploymentFreezes
     Dictionary<String, ReferenceCollection> ProjectEnvironmentScope { get; set; }
     DateTimeOffset Start { get; set; }
   }
+  class DeleteDeploymentFreezeCommand
+  {
+    .ctor()
+    String Id { get; set; }
+  }
+  class DeleteDeploymentFreezeResponse
+  {
+    .ctor()
+  }
   abstract class DeploymentFreezeClientExtensions
   {
     static Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeResponse Create(Octopus.Client.IOctopusClient, Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeCommand)
   }
+  class ModifyDeploymentFreezeCommand
+  {
+    .ctor()
+    DateTimeOffset End { get; set; }
+    String Id { get; set; }
+    String Name { get; set; }
+    Dictionary<String, ReferenceCollection> ProjectEnvironmentScope { get; set; }
+    DateTimeOffset Start { get; set; }
+  }
+  class ModifyDeploymentFreezeResponse
+  {
+    .ctor()
+    DateTimeOffset End { get; set; }
+    String Id { get; set; }
+    String Name { get; set; }
+    Dictionary<String, ReferenceCollection> ProjectEnvironmentScope { get; set; }
+    DateTimeOffset Start { get; set; }
+  }
 }
 Octopus.Client.Model.DeploymentProcess
 {
@@ -7503,6 +7539,8 @@ Octopus.Client.Repositories
   {
     .ctor(Octopus.Client.IOctopusClient)
     Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeResponse Create(Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeCommand)
+    Octopus.Client.Model.DeploymentFreezes.DeleteDeploymentFreezeResponse Delete(Octopus.Client.Model.DeploymentFreezes.DeleteDeploymentFreezeCommand)
+    Octopus.Client.Model.DeploymentFreezes.ModifyDeploymentFreezeResponse Modify(Octopus.Client.Model.DeploymentFreezes.ModifyDeploymentFreezeCommand)
   }
   interface IAccountRepository
     Octopus.Client.Repositories.IResourceRepository
@@ -7662,6 +7700,8 @@ Octopus.Client.Repositories
   interface IDeploymentFreezeRepository
   {
     Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeResponse Create(Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeCommand)
+    Octopus.Client.Model.DeploymentFreezes.DeleteDeploymentFreezeResponse Delete(Octopus.Client.Model.DeploymentFreezes.DeleteDeploymentFreezeCommand)
+    Octopus.Client.Model.DeploymentFreezes.ModifyDeploymentFreezeResponse Modify(Octopus.Client.Model.DeploymentFreezes.ModifyDeploymentFreezeCommand)
   }
   interface IDeploymentProcessRepository
     Octopus.Client.Repositories.IGet<DeploymentProcessResource>
@@ -8239,6 +8279,8 @@ Octopus.Client.Repositories.Async
   {
     .ctor(Octopus.Client.IOctopusAsyncClient)
     Task<CreateDeploymentFreezeResponse> Create(Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeCommand, CancellationToken)
+    Task<DeleteDeploymentFreezeResponse> Delete(Octopus.Client.Model.DeploymentFreezes.DeleteDeploymentFreezeCommand, CancellationToken)
+    Task<ModifyDeploymentFreezeResponse> Modify(Octopus.Client.Model.DeploymentFreezes.ModifyDeploymentFreezeCommand, CancellationToken)
   }
   interface IAccountRepository
     Octopus.Client.Repositories.Async.IResourceRepository
@@ -8403,6 +8445,8 @@ Octopus.Client.Repositories.Async
   interface IDeploymentFreezeRepository
   {
     Task<CreateDeploymentFreezeResponse> Create(Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeCommand, CancellationToken)
+    Task<DeleteDeploymentFreezeResponse> Delete(Octopus.Client.Model.DeploymentFreezes.DeleteDeploymentFreezeCommand, CancellationToken)
+    Task<ModifyDeploymentFreezeResponse> Modify(Octopus.Client.Model.DeploymentFreezes.ModifyDeploymentFreezeCommand, CancellationToken)
   }
   interface IDeploymentProcessRepository
     Octopus.Client.Repositories.Async.IGet<DeploymentProcessResource>
diff --git a/source/Octopus.Client.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress..NETFramework.approved.txt b/source/Octopus.Client.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress..NETFramework.approved.txt
index e73f0e44..6d52f3fe 100644
--- a/source/Octopus.Client.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress..NETFramework.approved.txt
+++ b/source/Octopus.Client.Tests/PublicSurfaceAreaFixture.ThePublicSurfaceAreaShouldNotRegress..NETFramework.approved.txt
@@ -37,6 +37,7 @@ Octopus.Client
     Task Delete(String, Object, Object)
     Task Delete(String, CancellationToken)
     Task Delete(String, Object, Object, CancellationToken)
+    Task<TResponse> Delete(String, Octopus.Client.TCommand, CancellationToken)
     Task<TResponse> Do(Octopus.Server.MessageContracts.Base.ICommand<TCommand, TResponse>, CancellationToken)
     Octopus.Client.IOctopusSpaceAsyncRepository ForSpace(Octopus.Client.Model.SpaceResource)
     Octopus.Client.IOctopusSystemAsyncRepository ForSystem()
@@ -81,6 +82,7 @@ Octopus.Client
     Task<TResource> Update(String, Octopus.Client.TResource, Object)
     Task<TResource> Update(String, Octopus.Client.TResource, CancellationToken)
     Task<TResource> Update(String, Octopus.Client.TResource, Object, CancellationToken)
+    Task<TResponse> Update(String, Octopus.Client.TCommand, Object, CancellationToken)
   }
   interface IOctopusAsyncRepository
     Octopus.Client.IOctopusSpaceAsyncRepository
@@ -99,6 +101,7 @@ Octopus.Client
     Octopus.Client.TResource Create(String, Octopus.Client.TResource, Object)
     Octopus.Client.TResponse Create(String, Octopus.Client.TCommand, Object)
     void Delete(String, Object, Object)
+    Octopus.Client.TResponse Delete(String, Octopus.Client.TCommand, Object)
     Octopus.Client.TResponse Do(Octopus.Server.MessageContracts.Base.ICommand<TCommand, TResponse>, CancellationToken)
     Octopus.Client.IOctopusSpaceRepository ForSpace(Octopus.Client.Model.SpaceResource)
     Octopus.Client.IOctopusSystemRepository ForSystem()
@@ -120,6 +123,7 @@ Octopus.Client
     void SignIn(Octopus.Client.Model.LoginCommand)
     void SignOut()
     Octopus.Client.TResource Update(String, Octopus.Client.TResource, Object)
+    Octopus.Client.TResponse Update(String, Octopus.Client.TCommand, Object)
   }
   interface IOctopusClientFactory
   {
@@ -315,6 +319,7 @@ Octopus.Client
     Task Delete(String, Object, Object)
     Task Delete(String, CancellationToken)
     Task Delete(String, Object, Object, CancellationToken)
+    Task<TResponse> Delete(String, Octopus.Client.TCommand, CancellationToken)
     void Dispose()
     Task<TResponse> Do(Octopus.Server.MessageContracts.Base.ICommand<TCommand, TResponse>, CancellationToken)
     Octopus.Client.IOctopusSpaceAsyncRepository ForSpace(Octopus.Client.Model.SpaceResource)
@@ -360,6 +365,7 @@ Octopus.Client
     Task<TResource> Update(String, Octopus.Client.TResource, Object)
     Task<TResource> Update(String, Octopus.Client.TResource, CancellationToken)
     Task<TResource> Update(String, Octopus.Client.TResource, Object, CancellationToken)
+    Task<TResponse> Update(String, Octopus.Client.TCommand, Object, CancellationToken)
   }
   class OctopusAsyncRepository
     Octopus.Client.IOctopusAsyncRepository
@@ -457,6 +463,7 @@ Octopus.Client
     Octopus.Client.TResource Create(String, Octopus.Client.TResource, Object)
     Octopus.Client.TResponse Create(String, Octopus.Client.TCommand, Object)
     void Delete(String, Object, Object)
+    Octopus.Client.TResponse Delete(String, Octopus.Client.TCommand, Object)
     void Dispose()
     Octopus.Client.TResponse Do(Octopus.Server.MessageContracts.Base.ICommand<TCommand, TResponse>, CancellationToken)
     Octopus.Client.IOctopusSpaceRepository ForSpace(Octopus.Client.Model.SpaceResource)
@@ -480,6 +487,7 @@ Octopus.Client
     void SignIn(Octopus.Client.Model.LoginCommand)
     void SignOut()
     Octopus.Client.TResource Update(String, Octopus.Client.TResource, Object)
+    Octopus.Client.TResponse Update(String, Octopus.Client.TCommand, Object)
   }
   class OctopusClientFactory
     Octopus.Client.IOctopusClientFactory
@@ -4213,6 +4221,7 @@ Octopus.Client.Model
     static Octopus.Client.Model.Permission DefectResolve
     static Octopus.Client.Model.Permission DeploymentCreate
     static Octopus.Client.Model.Permission DeploymentDelete
+    static Octopus.Client.Model.Permission DeploymentFreezeAdminister
     static Octopus.Client.Model.Permission DeploymentView
     static Octopus.Client.Model.Permission EnvironmentCreate
     static Octopus.Client.Model.Permission EnvironmentDelete
@@ -6417,10 +6426,37 @@ Octopus.Client.Model.DeploymentFreezes
     Dictionary<String, ReferenceCollection> ProjectEnvironmentScope { get; set; }
     DateTimeOffset Start { get; set; }
   }
+  class DeleteDeploymentFreezeCommand
+  {
+    .ctor()
+    String Id { get; set; }
+  }
+  class DeleteDeploymentFreezeResponse
+  {
+    .ctor()
+  }
   abstract class DeploymentFreezeClientExtensions
   {
     static Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeResponse Create(Octopus.Client.IOctopusClient, Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeCommand)
   }
+  class ModifyDeploymentFreezeCommand
+  {
+    .ctor()
+    DateTimeOffset End { get; set; }
+    String Id { get; set; }
+    String Name { get; set; }
+    Dictionary<String, ReferenceCollection> ProjectEnvironmentScope { get; set; }
+    DateTimeOffset Start { get; set; }
+  }
+  class ModifyDeploymentFreezeResponse
+  {
+    .ctor()
+    DateTimeOffset End { get; set; }
+    String Id { get; set; }
+    String Name { get; set; }
+    Dictionary<String, ReferenceCollection> ProjectEnvironmentScope { get; set; }
+    DateTimeOffset Start { get; set; }
+  }
 }
 Octopus.Client.Model.DeploymentProcess
 {
@@ -7528,6 +7564,8 @@ Octopus.Client.Repositories
   {
     .ctor(Octopus.Client.IOctopusClient)
     Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeResponse Create(Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeCommand)
+    Octopus.Client.Model.DeploymentFreezes.DeleteDeploymentFreezeResponse Delete(Octopus.Client.Model.DeploymentFreezes.DeleteDeploymentFreezeCommand)
+    Octopus.Client.Model.DeploymentFreezes.ModifyDeploymentFreezeResponse Modify(Octopus.Client.Model.DeploymentFreezes.ModifyDeploymentFreezeCommand)
   }
   interface IAccountRepository
     Octopus.Client.Repositories.IResourceRepository
@@ -7687,6 +7725,8 @@ Octopus.Client.Repositories
   interface IDeploymentFreezeRepository
   {
     Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeResponse Create(Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeCommand)
+    Octopus.Client.Model.DeploymentFreezes.DeleteDeploymentFreezeResponse Delete(Octopus.Client.Model.DeploymentFreezes.DeleteDeploymentFreezeCommand)
+    Octopus.Client.Model.DeploymentFreezes.ModifyDeploymentFreezeResponse Modify(Octopus.Client.Model.DeploymentFreezes.ModifyDeploymentFreezeCommand)
   }
   interface IDeploymentProcessRepository
     Octopus.Client.Repositories.IGet<DeploymentProcessResource>
@@ -8264,6 +8304,8 @@ Octopus.Client.Repositories.Async
   {
     .ctor(Octopus.Client.IOctopusAsyncClient)
     Task<CreateDeploymentFreezeResponse> Create(Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeCommand, CancellationToken)
+    Task<DeleteDeploymentFreezeResponse> Delete(Octopus.Client.Model.DeploymentFreezes.DeleteDeploymentFreezeCommand, CancellationToken)
+    Task<ModifyDeploymentFreezeResponse> Modify(Octopus.Client.Model.DeploymentFreezes.ModifyDeploymentFreezeCommand, CancellationToken)
   }
   interface IAccountRepository
     Octopus.Client.Repositories.Async.IResourceRepository
@@ -8428,6 +8470,8 @@ Octopus.Client.Repositories.Async
   interface IDeploymentFreezeRepository
   {
     Task<CreateDeploymentFreezeResponse> Create(Octopus.Client.Model.DeploymentFreezes.CreateDeploymentFreezeCommand, CancellationToken)
+    Task<DeleteDeploymentFreezeResponse> Delete(Octopus.Client.Model.DeploymentFreezes.DeleteDeploymentFreezeCommand, CancellationToken)
+    Task<ModifyDeploymentFreezeResponse> Modify(Octopus.Client.Model.DeploymentFreezes.ModifyDeploymentFreezeCommand, CancellationToken)
   }
   interface IDeploymentProcessRepository
     Octopus.Client.Repositories.Async.IGet<DeploymentProcessResource>
diff --git a/source/Octopus.Server.Client/IOctopusAsyncClient.cs b/source/Octopus.Server.Client/IOctopusAsyncClient.cs
index c0cbf9cb..3a1d7e2c 100644
--- a/source/Octopus.Server.Client/IOctopusAsyncClient.cs
+++ b/source/Octopus.Server.Client/IOctopusAsyncClient.cs
@@ -688,6 +688,7 @@ Task<TResponse> Create<TCommand, TResponse>(string path, TCommand command, objec
         [Obsolete("Please use the overload with cancellation token instead.", false)]
         Task<TResource> Update<TResource>(string path, TResource resource, object pathParameters = null);
 
+        
         /// <summary>
         /// Updates the resource at the given URI on the server using the PUT verb, then performs a fresh GET request to reload
         /// the data.
@@ -728,7 +729,26 @@ Task<TResponse> Create<TCommand, TResponse>(string path, TCommand command, objec
         /// <param name="cancellationToken">The request cancellation token.</param>
         /// <returns>The latest copy of the resource from the server.</returns>
         Task<TResource> Update<TResource>(string path, TResource resource, object pathParameters, CancellationToken cancellationToken);
-        
+        /// <summary>
+        /// Updates the resource at the given URI on the server using the PUT verb, then performs a fresh GET request to reload
+        /// the data.
+        /// </summary>
+        /// <exception cref="OctopusSecurityException">
+        /// HTTP 401 or 403: Thrown when the current user's API key was not valid, their
+        /// account is disabled, or they don't have permission to perform the specified action.
+        /// </exception>
+        /// <exception cref="OctopusServerException">
+        /// If any other error is successfully returned from the server (e.g., a 500
+        /// server error).
+        /// </exception>
+        /// <exception cref="OctopusValidationException">HTTP 400: If there was a problem with the request provided by the user.</exception>
+        /// <exception cref="OctopusResourceNotFoundException">HTTP 404: If the specified resource does not exist on the server.</exception>
+        /// <param name="path">The path to the resource to update.</param>
+        /// <param name="command">The command to update the resource.</param>
+        /// <param name="pathParameters">If the <c>path</c> is a URI template, parameters to use for substitution.</param>
+        /// <param name="cancellationToken">The request cancellation token.</param>
+        /// <returns>The response from updating the resource.</returns>
+        Task<TResponse> Update<TCommand, TResponse>(string path, TCommand command, object pathParameters, CancellationToken cancellationToken);
         /// <summary>
         /// Deletes the resource at the given URI from the server using a the DELETE verb. Deletes in Octopus happen
         /// asynchronously via a background task
@@ -796,6 +816,28 @@ Task<TResponse> Create<TCommand, TResponse>(string path, TCommand command, objec
         /// <returns>A task resource that provides details about the background task that deletes the specified resource.</returns>
         Task Delete(string path, object pathParameters, object resource, CancellationToken cancellationToken);
 
+        /// <summary>
+        /// Deletes the resource at the given URI from the server using a the DELETE verb. Deletes in Octopus happen
+        /// asynchronously via a background task
+        /// that is executed by the Octopus Server. The payload returned by delete will be the task that was created on the
+        /// server.
+        /// </summary>
+        /// <exception cref="OctopusSecurityException">
+        /// HTTP 401 or 403: Thrown when the current user's API key was not valid, their
+        /// account is disabled, or they don't have permission to perform the specified action.
+        /// </exception>
+        /// <exception cref="OctopusServerException">
+        /// If any other error is successfully returned from the server (e.g., a 500
+        /// server error).
+        /// </exception>
+        /// <exception cref="OctopusValidationException">HTTP 400: If there was a problem with the request provided by the user.</exception>
+        /// <exception cref="OctopusResourceNotFoundException">HTTP 404: If the specified resource does not exist on the server.</exception>
+        /// <param name="path">The path to the resource to delete.</param>
+        /// <param name="command">The command to delete the resource.</param>
+        /// <param name="cancellationToken">The request cancellation token.</param>
+        /// <returns>The response from deleting the resource.</returns>
+        Task<TResponse> Delete<TCommand, TResponse>(string path, TCommand command, CancellationToken cancellationToken);
+
         /// <summary>
         /// Fetches raw content from the resource at the specified path, using the GET verb.
         /// </summary>
diff --git a/source/Octopus.Server.Client/IOctopusClient.cs b/source/Octopus.Server.Client/IOctopusClient.cs
index 0aaf4f2f..dcdd222f 100644
--- a/source/Octopus.Server.Client/IOctopusClient.cs
+++ b/source/Octopus.Server.Client/IOctopusClient.cs
@@ -311,6 +311,26 @@ public interface IOctopusClient : IDisposable
         /// <param name="pathParameters">If the <c>path</c> is a URI template, parameters to use for substitution.</param>
         /// <returns>The latest copy of the resource from the server.</returns>
         TResource Update<TResource>(string path, TResource resource, object pathParameters = null);
+        
+        /// <summary>
+        /// Updates the resource at the given URI on the server using the PUT verb, then performs a fresh GET request to reload
+        /// the data.
+        /// </summary>
+        /// <exception cref="OctopusSecurityException">
+        /// HTTP 401 or 403: Thrown when the current user's API key was not valid, their
+        /// account is disabled, or they don't have permission to perform the specified action.
+        /// </exception>
+        /// <exception cref="OctopusServerException">
+        /// If any other error is successfully returned from the server (e.g., a 500
+        /// server error).
+        /// </exception>
+        /// <exception cref="OctopusValidationException">HTTP 400: If there was a problem with the request provided by the user.</exception>
+        /// <exception cref="OctopusResourceNotFoundException">HTTP 404: If the specified resource does not exist on the server.</exception>
+        /// <param name="path">The path to the resource to update.</param>
+        /// <param name="command">The command to update the resource.</param>
+        /// <param name="pathParameters">If the <c>path</c> is a URI template, parameters to use for substitution.</param>
+        /// <returns>The response from updating the resource.</returns>
+        TResponse Update<TCommand, TResponse>(string path, TCommand command, object pathParameters = null);
 
         /// <summary>
         /// Deletes the resource at the given URI from the server using a the DELETE verb. Deletes in Octopus happen
@@ -333,6 +353,25 @@ public interface IOctopusClient : IDisposable
         /// <param name="resource">An optional resource to pass as the body of the request.</param>
         /// <returns>A task resource that provides details about the background task that deletes the specified resource.</returns>
         void Delete(string path, object pathParameters = null, object resource = null);
+        
+        /// <summary>
+        /// Deletes the resource at the given URI from the server using a the DELETE verb.
+        /// </summary>
+        /// <exception cref="OctopusSecurityException">
+        /// HTTP 401 or 403: Thrown when the current user's API key was not valid, their
+        /// account is disabled, or they don't have permission to perform the specified action.
+        /// </exception>
+        /// <exception cref="OctopusServerException">
+        /// If any other error is successfully returned from the server (e.g., a 500
+        /// server error).
+        /// </exception>
+        /// <exception cref="OctopusValidationException">HTTP 400: If there was a problem with the request provided by the user.</exception>
+        /// <exception cref="OctopusResourceNotFoundException">HTTP 404: If the specified resource does not exist on the server.</exception>
+        /// <param name="path">The path to the resource to delete.</param>
+        /// <param name="pathParameters">If the <c>path</c> is a URI template, parameters to use for substitution.</param>
+        /// <param name="command">The command to delete the resource.</param>
+        /// <returns>The response from deleting the resource.</returns>
+        TResponse Delete<TCommand, TResponse>(string path, TCommand command, object pathParameters = null);
 
         /// <summary>
         /// Fetches raw content from the resource at the specified path, using the GET verb.
diff --git a/source/Octopus.Server.Client/Model/DeploymentFreezes/DeleteDeploymentFreezeCommand.cs b/source/Octopus.Server.Client/Model/DeploymentFreezes/DeleteDeploymentFreezeCommand.cs
new file mode 100644
index 00000000..392d573c
--- /dev/null
+++ b/source/Octopus.Server.Client/Model/DeploymentFreezes/DeleteDeploymentFreezeCommand.cs
@@ -0,0 +1,8 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace Octopus.Client.Model.DeploymentFreezes;
+
+public class DeleteDeploymentFreezeCommand
+{
+    [Required] public string Id { get; set; }
+}
\ No newline at end of file
diff --git a/source/Octopus.Server.Client/Model/DeploymentFreezes/DeleteDeploymentFreezeResponse.cs b/source/Octopus.Server.Client/Model/DeploymentFreezes/DeleteDeploymentFreezeResponse.cs
new file mode 100644
index 00000000..7a82c8aa
--- /dev/null
+++ b/source/Octopus.Server.Client/Model/DeploymentFreezes/DeleteDeploymentFreezeResponse.cs
@@ -0,0 +1,6 @@
+namespace Octopus.Client.Model.DeploymentFreezes;
+
+public class DeleteDeploymentFreezeResponse
+{
+
+}
\ No newline at end of file
diff --git a/source/Octopus.Server.Client/Model/DeploymentFreezes/ModifyDeploymentFreezeCommand.cs b/source/Octopus.Server.Client/Model/DeploymentFreezes/ModifyDeploymentFreezeCommand.cs
new file mode 100644
index 00000000..d779678a
--- /dev/null
+++ b/source/Octopus.Server.Client/Model/DeploymentFreezes/ModifyDeploymentFreezeCommand.cs
@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+
+namespace Octopus.Client.Model.DeploymentFreezes;
+
+public class ModifyDeploymentFreezeCommand
+{
+    [Required] public string Id { get; set; }
+
+    [Required(ErrorMessage = "Please provide a display name.")]
+    [MinLength(1)]
+    [MaxLength(200)]
+    public string Name { get; set; }
+
+    [Required(ErrorMessage = "Please provide a start time.")]
+    public DateTimeOffset Start { get; set; }
+
+    [Required(ErrorMessage = "Please provide an end time.")]
+    public DateTimeOffset End { get; set; }
+
+    [Required] public Dictionary<string, ReferenceCollection> ProjectEnvironmentScope { get; set; }
+}
\ No newline at end of file
diff --git a/source/Octopus.Server.Client/Model/DeploymentFreezes/ModifyDeploymentFreezeResponse.cs b/source/Octopus.Server.Client/Model/DeploymentFreezes/ModifyDeploymentFreezeResponse.cs
new file mode 100644
index 00000000..38157598
--- /dev/null
+++ b/source/Octopus.Server.Client/Model/DeploymentFreezes/ModifyDeploymentFreezeResponse.cs
@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+
+namespace Octopus.Client.Model.DeploymentFreezes;
+
+public class ModifyDeploymentFreezeResponse
+{
+    [Required] public string Id { get; set; }
+
+    [Required] public string Name { get; set; }
+
+    [Required] public DateTimeOffset Start { get; set; }
+
+    [Required] public DateTimeOffset End { get; set; }
+
+    [Required] public Dictionary<string, ReferenceCollection> ProjectEnvironmentScope { get; set; }
+}
\ No newline at end of file
diff --git a/source/Octopus.Server.Client/Model/Permission.cs b/source/Octopus.Server.Client/Model/Permission.cs
index c0194d5c..e4227e85 100644
--- a/source/Octopus.Server.Client/Model/Permission.cs
+++ b/source/Octopus.Server.Client/Model/Permission.cs
@@ -270,6 +270,7 @@ public class Permission : IEquatable<Permission>
 
         [Description("Delete Insights reports")] public static readonly Permission InsightsReportDelete = new("InsightsReportDelete");
 
+        [Description("Create, update, delete and override deployment freezes")] public static readonly Permission DeploymentFreezeAdminister = new("DeploymentFreezeAdminister");
         public Permission(string id)
         {
             Id = id;
diff --git a/source/Octopus.Server.Client/OctopusAsyncClient.cs b/source/Octopus.Server.Client/OctopusAsyncClient.cs
index 2d453b11..64e2773f 100644
--- a/source/Octopus.Server.Client/OctopusAsyncClient.cs
+++ b/source/Octopus.Server.Client/OctopusAsyncClient.cs
@@ -525,6 +525,14 @@ public Task Delete(string path, object pathParameters, object resource, Cancella
             return DispatchRequest<string>(new OctopusRequest("DELETE", uri, resource), true, cancellationToken);
         }
 
+        /// <inheritdoc />
+        public async Task<TResponse> Delete<TCommand, TResponse>(string path, TCommand command, CancellationToken cancellationToken)
+        {
+            var uri = QualifyUri(path);
+
+            var response = await DispatchRequest<TResponse>(new OctopusRequest("DELETE", uri, command), true, cancellationToken);
+            return response.ResponseResource;
+        }
         /// <inheritdoc/>
         public async Task<TResource> Update<TResource>(string path, TResource resource, object pathParameters = null)
         {
@@ -547,6 +555,14 @@ public async Task<TResource> Update<TResource>(string path, TResource resource,
             
             return result;
         }
+        
+        /// <inheritdoc/>
+        public async Task<TResponse> Update<TCommand, TResponse>(string path, TCommand resource, object pathParameters, CancellationToken cancellationToken)
+        {
+            var uri = QualifyUri(path, pathParameters);
+            var response = await DispatchRequest<TResponse>(new OctopusRequest("PUT", uri, requestResource: resource), true, cancellationToken).ConfigureAwait(false);
+            return response.ResponseResource;
+        }
 
         /// <inheritdoc />
         public async Task<Stream> GetContent(string path, object pathParameters = null)
diff --git a/source/Octopus.Server.Client/OctopusClient.cs b/source/Octopus.Server.Client/OctopusClient.cs
index bf335629..8f61c82b 100644
--- a/source/Octopus.Server.Client/OctopusClient.cs
+++ b/source/Octopus.Server.Client/OctopusClient.cs
@@ -386,6 +386,15 @@ public void Delete(string path, object pathParameters = null, object resource =
 
             DispatchRequest<string>(new OctopusRequest("DELETE", uri, resource), true);
         }
+        
+        /// <inheritdoc/>
+        public TResponse Delete<TCommand, TResponse>(string path, TCommand command, object pathParameters = null)
+        {
+            var uri = QualifyUri(path, pathParameters);
+
+            var response = DispatchRequest<TResponse>(new OctopusRequest("DELETE", uri, command), true);
+            return response.ResponseResource;
+        }
 
         /// <summary>
         /// Updates the resource at the given URI on the server using the PUT verb, then performs a fresh GET request to reload
@@ -407,6 +416,15 @@ public TResource Update<TResource>(string path, TResource resource, object pathP
             var getUrl = resourceSelfLinkExtractor.GetSelfUrlOrNull(response.ResponseResource) ?? path;
             return Get<TResource>(getUrl);
         }
+        
+        /// <inheritdoc/>
+        public TResponse Update<TCommand, TResponse>(string path, TCommand command, object pathParameters = null)
+        {
+            var uri = QualifyUri(path, pathParameters);
+
+            var response = DispatchRequest<TResponse>(new OctopusRequest("PUT", uri, requestResource: command), readResponse: true);
+            return response.ResponseResource;
+        }
 
         /// <summary>
         /// Fetches raw content from the resource at the specified path, using the GET verb.
diff --git a/source/Octopus.Server.Client/Repositories/Async/DeploymentFreezeRepository.cs b/source/Octopus.Server.Client/Repositories/Async/DeploymentFreezeRepository.cs
index cdb20f6b..084ffc0e 100644
--- a/source/Octopus.Server.Client/Repositories/Async/DeploymentFreezeRepository.cs
+++ b/source/Octopus.Server.Client/Repositories/Async/DeploymentFreezeRepository.cs
@@ -7,6 +7,12 @@ namespace Octopus.Client.Repositories.Async;
 public interface IDeploymentFreezeRepository
 {
     Task<CreateDeploymentFreezeResponse> Create(CreateDeploymentFreezeCommand command, CancellationToken cancellationToken);
+
+    Task<ModifyDeploymentFreezeResponse> Modify(ModifyDeploymentFreezeCommand command,
+        CancellationToken cancellationToken);
+
+    Task<DeleteDeploymentFreezeResponse> Delete(DeleteDeploymentFreezeCommand command,
+        CancellationToken cancellationToken);
 }
 
 public class DeploymentFreezeRepository(IOctopusAsyncClient client) : IDeploymentFreezeRepository
@@ -18,4 +24,19 @@ public async Task<CreateDeploymentFreezeResponse> Create(CreateDeploymentFreezeC
         var response = await client.Create<CreateDeploymentFreezeCommand, CreateDeploymentFreezeResponse>(link, command, null, cancellationToken);
         return response;
     }
+
+    public async Task<ModifyDeploymentFreezeResponse> Modify(ModifyDeploymentFreezeCommand command, CancellationToken cancellationToken)
+    {
+        var link = await client.Repository.Link("DeploymentFreezes");
+
+        return await client.Update<ModifyDeploymentFreezeCommand, ModifyDeploymentFreezeResponse>(link, command, null, cancellationToken);
+    }
+
+    public async Task<DeleteDeploymentFreezeResponse> Delete(DeleteDeploymentFreezeCommand command, CancellationToken cancellationToken)
+    {
+        var link = await client.Repository.Link("DeploymentFreezes");
+
+        return await client.Delete<DeleteDeploymentFreezeCommand, DeleteDeploymentFreezeResponse>(link, command,
+                cancellationToken);
+    }
 }
\ No newline at end of file
diff --git a/source/Octopus.Server.Client/Repositories/DeploymentFreezeRepository.cs b/source/Octopus.Server.Client/Repositories/DeploymentFreezeRepository.cs
index 5737b26e..b94de260 100644
--- a/source/Octopus.Server.Client/Repositories/DeploymentFreezeRepository.cs
+++ b/source/Octopus.Server.Client/Repositories/DeploymentFreezeRepository.cs
@@ -5,6 +5,8 @@ namespace Octopus.Client.Repositories;
 public interface IDeploymentFreezeRepository
 {
     CreateDeploymentFreezeResponse Create(CreateDeploymentFreezeCommand command);
+    ModifyDeploymentFreezeResponse Modify(ModifyDeploymentFreezeCommand command);
+    DeleteDeploymentFreezeResponse Delete(DeleteDeploymentFreezeCommand command);
 }
 
 public class DeploymentFreezeRepository(IOctopusClient client) : IDeploymentFreezeRepository
@@ -15,4 +17,18 @@ public CreateDeploymentFreezeResponse Create(CreateDeploymentFreezeCommand comma
 
         return client.Create<CreateDeploymentFreezeCommand, CreateDeploymentFreezeResponse>(link, command);
     }
+
+    public ModifyDeploymentFreezeResponse Modify(ModifyDeploymentFreezeCommand command)
+    {
+        var link = client.Repository.Link("DeploymentFreezes");
+
+        return client.Update<ModifyDeploymentFreezeCommand, ModifyDeploymentFreezeResponse>(link, command);
+    }
+
+    public DeleteDeploymentFreezeResponse Delete(DeleteDeploymentFreezeCommand command)
+    {
+        var link = client.Repository.Link("DeploymentFreezes");
+
+        return client.Delete<DeleteDeploymentFreezeCommand, DeleteDeploymentFreezeResponse>(link, command);
+    }
 }
\ No newline at end of file