diff --git a/.github/workflows/release-tip.yml b/.github/workflows/release-tip.yml
index d0d9264a2..f228852a1 100644
--- a/.github/workflows/release-tip.yml
+++ b/.github/workflows/release-tip.yml
@@ -8,6 +8,12 @@ on:
 
 name: Release Tip
 
+# We must only run one release workflow at a time to prevent corrupting
+# our release artifacts.
+concurrency:
+  group: ${{ github.workflow }}
+  cancel-in-progress: false
+
 jobs:
   tag:
     runs-on: namespace-profile-ghostty-sm