diff --git a/.github/workflows/deps.yaml b/.github/workflows/deps.yaml
index 1d6f84d..02db7ef 100644
--- a/.github/workflows/deps.yaml
+++ b/.github/workflows/deps.yaml
@@ -1,3 +1,5 @@
+# Guards against merging a lockfile that's misaligned with pyproject.toml.
+# Other workflows silently update the lockfile instead of failing on a transient branch state.
 name: Check Python deps
 
 on: