diff --git a/server/src-lib/Hasura/GraphQL/Validate/Types.hs b/server/src-lib/Hasura/GraphQL/Validate/Types.hs
index c844d958..d8fd95c4 100644
--- a/server/src-lib/Hasura/GraphQL/Validate/Types.hs
+++ b/server/src-lib/Hasura/GraphQL/Validate/Types.hs
@@ -187,6 +187,7 @@ pgColTyToScalar = \case
   PGBoolean -> "Boolean"
   PGFloat   -> "Float"
   PGText    -> "String"
+  PGVarchar -> "String"
   t         -> T.pack $ show t
 
 mkScalarTy :: PGColType -> G.NamedType