diff --git a/src/Deriving/OpenApi.hs b/src/Deriving/OpenApi.hs
index f0302e5..69efe9d 100644
--- a/src/Deriving/OpenApi.hs
+++ b/src/Deriving/OpenApi.hs
@@ -3,6 +3,7 @@
 module Deriving.OpenApi
   ( CustomOpenApi,
     DatatypeNameModifier,
+    ToSchema,
     module Deriving.Aeson,
   )
 where