diff --git a/CHANGELOG.md b/CHANGELOG.md
index d96ad3f1c6..1236363ab4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ### Unreleased
 
-
+* enhancements
+  * Changed to use a separate deprecator inside the gem. because `rails` 7.1 will deprecate using the singleton `ActiveSupport::Deprecation.instance` (@soartec-lab, @etiennebarrie)
 
 ### 4.9.2 - 2023-04-03
 
diff --git a/lib/devise/rails/deprecated_constant_accessor.rb b/lib/devise/rails/deprecated_constant_accessor.rb
index d1eff92f2c..f5cf01f89c 100644
--- a/lib/devise/rails/deprecated_constant_accessor.rb
+++ b/lib/devise/rails/deprecated_constant_accessor.rb
@@ -26,7 +26,7 @@ def const_missing(missing_const_name)
             super
           end
 
-          def deprecate_constant(const_name, new_constant, message: nil, deprecator: ActiveSupport::Deprecation.instance)
+          def deprecate_constant(const_name, new_constant, message: nil, deprecator: Devise.deprecator)
             class_variable_set(:@@_deprecated_constants, {}) unless class_variable_defined?(:@@_deprecated_constants)
             class_variable_get(:@@_deprecated_constants)[const_name.to_s] = { new: new_constant, message: message, deprecator: deprecator }
           end