diff --git a/pkgs/development/compilers/ocaml/ber-metaocaml.nix b/pkgs/development/compilers/ocaml/ber-metaocaml.nix
index 778aac812808..38df7bddbacd 100644
--- a/pkgs/development/compilers/ocaml/ber-metaocaml.nix
+++ b/pkgs/development/compilers/ocaml/ber-metaocaml.nix
@@ -16,9 +16,9 @@ let
   ];
   inherit (lib) optionals;
 
-  baseOcamlBranch = "4.14";
-  baseOcamlVersion = "${baseOcamlBranch}.1";
-  metaocamlPatch = "114";
+  baseOcamlBranch = "5.3";
+  baseOcamlVersion = "${baseOcamlBranch}.0";
+  metaocamlPatch = "153";
 in
 
 stdenv.mkDerivation rec {
@@ -27,12 +27,12 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "https://caml.inria.fr/pub/distrib/ocaml-${baseOcamlBranch}/ocaml-${baseOcamlVersion}.tar.gz";
-    sha256 = "sha256-GDl53JwJyw9YCiMraFMaCbAlqmKLjY1ydEnxRv1vX+4=";
+    sha256 = "sha256-IsHdneIb9Dti0ZCQQftfrWSJBSJ79pVQpqa+8x5lTzg=";
   };
 
   metaocaml = fetchurl {
     url = "https://okmij.org/ftp/ML/ber-metaocaml-${metaocamlPatch}.tar.gz";
-    sha256 = "sha256-vvq3xI4jSAsrXcDk97TPbFDYgO9NcQeN/yBcUbcb/y0=";
+    sha256 = "sha256-zN4C+ZKpPyT87U9wba8D475K6NWOotSYdd67D+1LSlI=";
   };
 
   x11env = buildEnv {