diff --git a/lib/runtime_generic.rb b/lib/runtime_generic.rb
index 3a56349..387e63c 100644
--- a/lib/runtime_generic.rb
+++ b/lib/runtime_generic.rb
@@ -1,5 +1,14 @@
 # typed: true
 
+# Fix tapioca prepend issue
+module T
+  module Generic
+    def self.prepended(mod)
+      RuntimeGeneric.prepend(mod)
+    end
+  end
+end
+
 # This module allows using type introspection to serialize/deserialize custom generics in
 # T::Structs.
 #