diff --git a/pkgs/development/compilers/ocaml/4.12.nix b/pkgs/development/compilers/ocaml/4.12.nix
index c422d2a15a3..0662e66e0b6 100644
--- a/pkgs/development/compilers/ocaml/4.12.nix
+++ b/pkgs/development/compilers/ocaml/4.12.nix
@@ -1,9 +1,6 @@
 import ./generic.nix {
   major_version = "4";
   minor_version = "12";
-  patch_version = "0-beta1";
-  src = fetchTarball {
-    url = "http://caml.inria.fr/pub/distrib/ocaml-4.12/ocaml-4.12.0~beta1.tar.xz";
-    sha256 = "1rny74mi0knl8byqg2naw1mgvn22c2zihlwvzbkd56j97flqsxsm";
-  };
+  patch_version = "0";
+  sha256 = "1hxy349jfa2vkfgmxf6pvd9w4z5bmcgsg0fxfdabcghyvjw9vvir";
 }
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 5f250d79af2..c35631aecf0 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1415,7 +1415,7 @@ in let inherit (pkgs) callPackage; in rec
 
   ocamlPackages_4_12 = mkOcamlPackages (callPackage ../development/compilers/ocaml/4.12.nix { });
 
-  ocamlPackages_latest = ocamlPackages_4_11;
+  ocamlPackages_latest = ocamlPackages_4_12;
 
   ocamlPackages = ocamlPackages_4_10;
 }