diff --git a/test/UpdownDotNetTests/UpdownDotNetTests.csproj b/test/UpdownDotNetTests/UpdownDotNetTests.csproj
index ea7e19d..94b2736 100644
--- a/test/UpdownDotNetTests/UpdownDotNetTests.csproj
+++ b/test/UpdownDotNetTests/UpdownDotNetTests.csproj
@@ -22,7 +22,7 @@
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>
 		<PackageReference Include="NUnit3TestAdapter" Version="5.2.0" />
-		<PackageReference Include="WireMock.Net" Version="1.15.0" />
+		<PackageReference Include="WireMock.Net" Version="1.21.0" />
 	</ItemGroup>
 
 	<ItemGroup>