diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 66c6108..112be2c 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -79,7 +79,7 @@ jobs:
     # https://docs.github.com/en/actions/learn-github-actions/contexts#context-availability
     strategy:
       matrix:
-        msrv: [1.65.0] # Let-else statements are used in the code
+        msrv: [1.72.0] # cosmrs v0.15.0 requires 1.72.0 or newer
     name: ubuntu / ${{ matrix.msrv }}
     steps:
       - uses: actions/checkout@v3