diff --git a/pkgs/applications/science/math/glsurf/default.nix b/pkgs/applications/science/math/glsurf/default.nix
index 808d89ef9636..bfc1998238e2 100644
--- a/pkgs/applications/science/math/glsurf/default.nix
+++ b/pkgs/applications/science/math/glsurf/default.nix
@@ -40,7 +40,8 @@ stdenv.mkDerivation rec {
   ] ++ (with ocamlPackages; [
     camlp4
     lablgl
-    camlimages_4_2_4
+    camlimages
+    num
   ]);
 
   postPatch = ''
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 8086a44fe793..50c76dfb8ea4 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -20169,7 +20169,9 @@ with pkgs;
   glpk = callPackage ../development/libraries/glpk { };
 
   glsurf = callPackage ../applications/science/math/glsurf {
-    ocamlPackages = ocaml-ng.ocamlPackages_4_05;
+    ocamlPackages = ocaml-ng.mkOcamlPackages (ocaml-ng.ocamlPackages_4_14.ocaml.override {
+      unsafeStringSupport = true;
+    });
   };
 
   glui = callPackage ../development/libraries/glui {};