diff --git a/.github/workflows/pr.yaml b/.github/workflows/pr.yaml
index 116712d..d5c1a0e 100644
--- a/.github/workflows/pr.yaml
+++ b/.github/workflows/pr.yaml
@@ -16,6 +16,7 @@ jobs:
           - ubuntu-latest
         rust:
           - stable
+          - 1.52 # Project MSRV
         cargo:
           - name: "Clippy"
             cmd: clippy