diff --git a/pkgs/development/ocaml-modules/dockerfile/default.nix b/pkgs/development/ocaml-modules/dockerfile/default.nix
index 5ef6e3835ad6..6f354a16c5f6 100644
--- a/pkgs/development/ocaml-modules/dockerfile/default.nix
+++ b/pkgs/development/ocaml-modules/dockerfile/default.nix
@@ -10,13 +10,13 @@
 
 buildDunePackage (finalAttrs: {
   pname = "dockerfile";
-  version = "8.3.4";
+  version = "8.3.9";
 
   src = fetchFromGitHub {
     owner = "ocurrent";
     repo = "ocaml-dockerfile";
     tag = finalAttrs.version;
-    hash = "sha256-q8yzuRkGVe/t0N0HFLFqOPNyvWSxf4WHApZVk1CG1qw=";
+    hash = "sha256-O2+kjQnjKSYFZM28RwAUTnNlvEW2CrfdMjT9J8LcPcc=";
   };
 
   propagatedBuildInputs = [