diff --git a/pkgs/by-name/jm/jmc2obj/package.nix b/pkgs/by-name/jm/jmc2obj/package.nix
index 10e2d0612758..efc0114dc310 100644
--- a/pkgs/by-name/jm/jmc2obj/package.nix
+++ b/pkgs/by-name/jm/jmc2obj/package.nix
@@ -14,7 +14,7 @@ maven.buildMavenPackage rec {
   src = fetchFromGitHub {
     owner = "jmc2obj";
     repo = "j-mc-2-obj";
-    rev = version;
+    tag = version;
     hash = "sha256-3+vH1pGJ6I4oobb2vk+J5GrOQrSLNoCuBIC9OsWYCj0=";
   };