diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5a2adca..145a107 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,7 +19,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        ruby: ["2.6", "2.7", "3.0"]
+        ruby: ["2.7", "3.0", "3.1", "3.2"]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
diff --git a/accessly.gemspec b/accessly.gemspec
index 9052f1d..6d1bdb6 100644
--- a/accessly.gemspec
+++ b/accessly.gemspec
@@ -26,7 +26,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler", "~> 2.1"
   spec.add_development_dependency "rake", "~> 13.0"
   spec.add_development_dependency "minitest", "~> 5.0"
-  spec.add_development_dependency "database_cleaner", "~> 1.8"
+  spec.add_development_dependency "database_cleaner", "~> 2.0"
   spec.add_development_dependency "pg", "~> 1.0"
   spec.add_development_dependency "rails", ">= 5.0"
 end
diff --git a/lib/accessly/permission/grant.rb b/lib/accessly/permission/grant.rb
index 530f620..2e7c9cf 100644
--- a/lib/accessly/permission/grant.rb
+++ b/lib/accessly/permission/grant.rb
@@ -8,9 +8,9 @@ class Grant < Accessly::Base
       # @param actor [ActiveRecord::Base] The actor to grant permission
       def initialize(actor)
         super(actor)
-        @actor = case actor
-        when ActiveRecord::Base
-          actor
+
+        if actor.is_a?(ActiveRecord::Base)
+          @actor = actor
         else
           raise Accessly::GrantError.new("Actor is not an ActiveRecord::Base object")
         end