diff --git a/pkgs/development/ocaml-modules/ppxlib/default.nix b/pkgs/development/ocaml-modules/ppxlib/default.nix
index bc849fa1ece3..b64a5301fc32 100644
--- a/pkgs/development/ocaml-modules/ppxlib/default.nix
+++ b/pkgs/development/ocaml-modules/ppxlib/default.nix
@@ -3,7 +3,7 @@
   if lib.versionAtLeast ocaml.version "4.07"
   then if lib.versionAtLeast ocaml.version "4.08"
   then if lib.versionAtLeast ocaml.version "4.11"
-  then "0.32.1" else "0.24.0" else "0.15.0" else "0.13.0"
+  then "0.33.0" else "0.24.0" else "0.15.0" else "0.13.0"
 , ocaml-compiler-libs, ocaml-migrate-parsetree, ppx_derivers, stdio
 , stdlib-shims, ocaml-migrate-parsetree-2
 }:
@@ -67,6 +67,10 @@ let param = {
     sha256 = "sha256-nbrYvLHItPPfP1i8pgpe0j2GUx8No0tBlshr1YXAnX8=";
     min_version = "4.07";
   };
+  "0.33.0" = {
+    sha256 = "sha256-/6RO9VHyO3XiHb1pijAxBDE4Gq8UC5/kuBwucKLSxjo=";
+    min_version = "4.07";
+  };
 }."${version}"; in
 
 if param ? max_version && lib.versionAtLeast ocaml.version param.max_version