diff --git a/railties/lib/rails/source_annotation_extractor.rb b/railties/lib/rails/source_annotation_extractor.rb
index 9fa2de2e54..73bee5bcbf 100644
--- a/railties/lib/rails/source_annotation_extractor.rb
+++ b/railties/lib/rails/source_annotation_extractor.rb
@@ -1,5 +1,12 @@
 # frozen_string_literal: true
 
+require "active_support/deprecation"
+
+# Remove this deprecated class in the next minor version
+#:nodoc:
+SourceAnnotationExtractor = ActiveSupport::Deprecation::DeprecatedConstantProxy.
+  new("SourceAnnotationExtractor", "Rails::SourceAnnotationExtractor")
+
 module Rails
   # Implements the logic behind the rake tasks for annotations like
   #