diff --git a/BUILD.gn b/BUILD.gn
index a5ae6886861b7..4e63c97415f83 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -379,6 +379,9 @@ if (angle_use_commit_id) {
       commit_id_output_file,
     ]
 
+    # commit id should depend on angle's HEAD revision
+    inputs = [ ".git/HEAD" ]
+
     args = [
       "gen",
       rebase_path(".", root_build_dir),