diff --git a/pkgs/applications/editors/vscode/extensions/default.nix b/pkgs/applications/editors/vscode/extensions/default.nix
index 19e00aa288fa..bcc6a21a4031 100644
--- a/pkgs/applications/editors/vscode/extensions/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/default.nix
@@ -3782,8 +3782,8 @@ let
         mktplcRef = {
           name = "ocaml-platform";
           publisher = "ocamllabs";
-          version = "1.12.2";
-          hash = "sha256-dj8UFbYgAl6dt/1MuIBawTVUbBDTTedZEcHtKZjEcew=";
+          version = "1.20.0";
+          hash = "sha256-lHTnyObWWhMIXipqdII9GYLGQDFPMFP5y/L/ai9325o=";
         };
       };