diff --git a/spec/lib/amoeba/config/has_many_spec.rb b/spec/lib/amoeba/config/has_many_spec.rb
index 7e7ef3f..8203a14 100644
--- a/spec/lib/amoeba/config/has_many_spec.rb
+++ b/spec/lib/amoeba/config/has_many_spec.rb
@@ -18,6 +18,7 @@
         t.boolean :extra
       end
 
+      reset_model_cache
       stub_const 'Parent', Class.new(ActiveRecord::Base)
       stub_const 'Child', Class.new(ActiveRecord::Base)
       Parent.class_eval <<~CONFIG, __FILE__, __LINE__ + 1
@@ -127,6 +128,7 @@
         t.references :child
       end
 
+      reset_model_cache
       stub_const 'Parent', Class.new(ActiveRecord::Base)
       stub_const 'Child', Class.new(ActiveRecord::Base)
       stub_const 'ParentChild', Class.new(ActiveRecord::Base)
diff --git a/spec/lib/amoeba/config/has_one_spec.rb b/spec/lib/amoeba/config/has_one_spec.rb
index 471ef41..7c0e0d6 100644
--- a/spec/lib/amoeba/config/has_one_spec.rb
+++ b/spec/lib/amoeba/config/has_one_spec.rb
@@ -31,6 +31,7 @@
         t.string :name
       end
 
+      reset_model_cache
       stub_const 'Parent', Class.new(ActiveRecord::Base)
       stub_const 'Child', Class.new(ActiveRecord::Base)
 
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 8e3df44..cb48054 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -18,6 +18,7 @@
 
 require 'active_record'
 require 'amoeba'
+require 'support/helpers'
 
 adapter = if defined?(JRuby)
             require 'activerecord-jdbcsqlite3-adapter'
diff --git a/spec/support/helpers.rb b/spec/support/helpers.rb
new file mode 100644
index 0000000..05415df
--- /dev/null
+++ b/spec/support/helpers.rb
@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+def reset_model_cache
+  ActiveSupport::Dependencies::Reference.clear! if ActiveSupport::VERSION::MAJOR < 7
+end