diff --git a/pkgs/by-name/wa/watchman/package.nix b/pkgs/by-name/wa/watchman/package.nix
index bd471a914b1b..3337590d3172 100644
--- a/pkgs/by-name/wa/watchman/package.nix
+++ b/pkgs/by-name/wa/watchman/package.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation (finalAttrs: {
   src = fetchFromGitHub {
     owner = "facebook";
     repo = "watchman";
-    rev = "v${finalAttrs.version}";
+    rev = "refs/tags/v${finalAttrs.version}";
     hash = "sha256-cD8mIYCc+8Z2p3rwKVRFcW9sOBbpb5KHU5VpbXHMpeg=";
   };