diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
index fddfc8d..dafa5cf 100644
--- a/.github/workflows/CI.yaml
+++ b/.github/workflows/CI.yaml
@@ -8,7 +8,7 @@ on:
       - "main"
   pull_request:
     branches:
-      - "main"
+      - "master"
   schedule:
     # Weekly tests run on main by default:
     #   Scheduled workflows run on the latest commit on the default or base branch.