diff --git a/pkgs/development/ocaml-modules/stdcompat/default.nix b/pkgs/development/ocaml-modules/stdcompat/default.nix
index 2e6266957148..0f3b5377fc51 100644
--- a/pkgs/development/ocaml-modules/stdcompat/default.nix
+++ b/pkgs/development/ocaml-modules/stdcompat/default.nix
@@ -4,11 +4,11 @@
 
 stdenv.mkDerivation rec {
   pname = "ocaml${ocaml.version}-stdcompat";
-  version = "15";
+  version = "18";
 
   src = fetchurl {
     url = "https://github.com/thierry-martinez/stdcompat/releases/download/v${version}/stdcompat-${version}.tar.gz";
-    sha256 = "1xcwb529m4lg9cbnxa9m3x2nnl9nxzz1x5lxpvdfflg4zxl6yx2y";
+    sha256 = "sha256:01y67rndjlzfp5zq0gbqpg9skqq2hfbvhbq9lfhhk5xidr98sfj8";
   };
 
   buildInputs = [ ocaml findlib ];