diff --git a/version.nix b/version.nix
index 485f9589d8..e20f271b43 100644
--- a/version.nix
+++ b/version.nix
@@ -4,4 +4,4 @@
 
 { lib, ... }:
 
-"depot-" + lib.trim (builtins.readFile .git/HEAD)
+"depot-" + lib.commitIdFromGitRepo ./.git