diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index 1cd9d1b..b023962 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -17,6 +17,7 @@ jobs:
   build-and-test:
     strategy:
       matrix:
+        # Keep MSRV in sync with rust-version in Cargo.toml
         rust: [stable, beta, nightly, 1.56.0]
     runs-on: ubuntu-latest
     steps: