diff --git a/.github/workflows/monthly-nightly-update.yml b/.github/workflows/monthly-nightly-update.yml
index c145476f..63abe886 100644
--- a/.github/workflows/monthly-nightly-update.yml
+++ b/.github/workflows/monthly-nightly-update.yml
@@ -44,7 +44,7 @@ jobs:
               ) + " - Rust Nightly Update",
               owner,
               repo,
-              head: "${{ steps.commit.outputs.commit }}",
+              head: "nightly-" + (new Date()).toISOString().split("-").splice(0, 2).join("-"),
               base: "develop",
               body: "PR auto-generated by a GitHub workflow."
             });