diff --git a/spec/active_interaction/base_spec.rb b/spec/active_interaction/base_spec.rb
index 92cbd5bd..3f916da3 100644
--- a/spec/active_interaction/base_spec.rb
+++ b/spec/active_interaction/base_spec.rb
@@ -2,15 +2,15 @@
 
 require 'spec_helper'
 
-class InteractionWithFilter < TestInteraction
+InteractionWithFilter = Class.new(TestInteraction) do
   float :thing
 end
 
-class InteractionWithDateFilter < TestInteraction
+InteractionWithDateFilter = Class.new(TestInteraction) do
   date :thing
 end
 
-class AddInteraction < TestInteraction
+AddInteraction = Class.new(TestInteraction) do
   float :x, :y
 
   def execute
@@ -18,7 +18,7 @@ def execute
   end
 end
 
-class InterruptInteraction < TestInteraction
+InterruptInteraction = Class.new(TestInteraction) do
   object :x, :y,
     class: Object,
     default: nil
diff --git a/spec/active_interaction/concerns/active_recordable_spec.rb b/spec/active_interaction/concerns/active_recordable_spec.rb
index 315d66e7..5117f638 100644
--- a/spec/active_interaction/concerns/active_recordable_spec.rb
+++ b/spec/active_interaction/concerns/active_recordable_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-class InteractionWithFloatFilter < TestInteraction
+InteractionWithFloatFilter = Class.new(TestInteraction) do
   float :thing
 end
 
diff --git a/spec/active_interaction/i18n_spec.rb b/spec/active_interaction/i18n_spec.rb
index f24fca4c..ffc56ea5 100644
--- a/spec/active_interaction/i18n_spec.rb
+++ b/spec/active_interaction/i18n_spec.rb
@@ -12,7 +12,7 @@
   end
 end
 
-class I18nInteraction < TestInteraction
+I18nInteraction = Class.new(TestInteraction) do
   hash :a do
     hash :x
   end
diff --git a/spec/active_interaction/integration/array_interaction_spec.rb b/spec/active_interaction/integration/array_interaction_spec.rb
index 06eade31..2179d0ae 100644
--- a/spec/active_interaction/integration/array_interaction_spec.rb
+++ b/spec/active_interaction/integration/array_interaction_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-class ArrayInteraction < TestInteraction
+ArrayInteraction = Class.new(TestInteraction) do
   array :a do
     array
   end
diff --git a/spec/active_interaction/integration/file_interaction_spec.rb b/spec/active_interaction/integration/file_interaction_spec.rb
index 5441fa19..76e68a73 100644
--- a/spec/active_interaction/integration/file_interaction_spec.rb
+++ b/spec/active_interaction/integration/file_interaction_spec.rb
@@ -3,7 +3,7 @@
 require 'spec_helper'
 require 'action_dispatch'
 
-class FileInteraction < TestInteraction
+FileInteraction = Class.new(TestInteraction) do
   file :a
 end
 
diff --git a/spec/active_interaction/integration/hash_interaction_spec.rb b/spec/active_interaction/integration/hash_interaction_spec.rb
index ffad81d3..a3008715 100644
--- a/spec/active_interaction/integration/hash_interaction_spec.rb
+++ b/spec/active_interaction/integration/hash_interaction_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-class HashInteraction < TestInteraction
+HashInteraction = Class.new(TestInteraction) do
   hash :a do
     hash :x
   end
diff --git a/spec/active_interaction/integration/interface_interaction_spec.rb b/spec/active_interaction/integration/interface_interaction_spec.rb
index a8c3c6dc..fddf1b8c 100644
--- a/spec/active_interaction/integration/interface_interaction_spec.rb
+++ b/spec/active_interaction/integration/interface_interaction_spec.rb
@@ -4,7 +4,7 @@
 require 'json'
 require 'yaml'
 
-class InterfaceInteraction < TestInteraction
+InterfaceInteraction = Class.new(TestInteraction) do
   interface :anything
 end
 
diff --git a/spec/active_interaction/integration/object_interaction_spec.rb b/spec/active_interaction/integration/object_interaction_spec.rb
index 9ac68fee..50ef3f71 100644
--- a/spec/active_interaction/integration/object_interaction_spec.rb
+++ b/spec/active_interaction/integration/object_interaction_spec.rb
@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-class ObjectInteraction < TestInteraction
+ObjectInteraction = Class.new(TestInteraction) do
   object :object
 end
 
diff --git a/spec/active_interaction/integration/time_interaction_spec.rb b/spec/active_interaction/integration/time_interaction_spec.rb
index 14e50c65..135864d1 100644
--- a/spec/active_interaction/integration/time_interaction_spec.rb
+++ b/spec/active_interaction/integration/time_interaction_spec.rb
@@ -25,7 +25,7 @@ def ==(other)
   end
 end
 
-class TimeInteraction < TestInteraction
+TimeInteraction = Class.new(TestInteraction) do
   time :a
 end