diff --git a/pkgs/development/compilers/ocaml/5.4.nix b/pkgs/development/compilers/ocaml/5.4.nix
index 966b24944e90..0ba67d5a77e8 100644
--- a/pkgs/development/compilers/ocaml/5.4.nix
+++ b/pkgs/development/compilers/ocaml/5.4.nix
@@ -1,6 +1,6 @@
 import ./generic.nix {
   major_version = "5";
   minor_version = "4";
-  patch_version = "0";
-  sha256 = "sha256-36qKLhHHmbwXZdi+9EkRQG7l9IAwJxkDgqk5+IyRImY=";
+  patch_version = "1";
+  sha256 = "sha256-seKXrcGGY1VAdY6wZMf6sCVZiuRDbzuXZ+UCUYi04Ks=";
 }
diff --git a/pkgs/development/tools/ocaml/merlin/4.x.nix b/pkgs/development/tools/ocaml/merlin/4.x.nix
index 9fbedf1c7b9f..704ea74e0ec0 100644
--- a/pkgs/development/tools/ocaml/merlin/4.x.nix
+++ b/pkgs/development/tools/ocaml/merlin/4.x.nix
@@ -31,6 +31,7 @@
       "5.2.1" = "5.3-502";
       "5.3.0" = "5.6-503";
       "5.4.0" = "5.6-504";
+      "5.4.1" = "5.6-504";
     }
     ."${ocaml.version}",
 }: