1 files changed, 1 insertions, 1 deletions
diff --git a/nixpkgs/pkgs/development/ocaml-modules/otr/default.nix b/nixpkgs/pkgs/development/ocaml-modules/otr/default.nix
index caa2d01a4418..ba192b3c24b2 100644
--- a/nixpkgs/pkgs/development/ocaml-modules/otr/default.nix
+++ b/nixpkgs/pkgs/development/ocaml-modules/otr/default.nix
@@ -9,7 +9,7 @@ buildDunePackage rec {
   src = fetchFromGitHub {
     owner  = "hannesm";
     repo   = "ocaml-otr";
-    rev    = "${version}";
+    rev    = version;
     sha256 = "0iz6p85a0jxng9aq9blqsky173zaqfr6wlc5j48ad55lgwzlbih5";
   };