diff --git a/.github/workflows/pr-close.yml b/.github/workflows/pr-close.yml
index a232f90292..ed25b112fb 100644
--- a/.github/workflows/pr-close.yml
+++ b/.github/workflows/pr-close.yml
@@ -6,7 +6,8 @@ on:
       - closed
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
+  # PR open and close use the same group, allowing only one at a time
+  group: pr-${{ github.ref }}
   cancel-in-progress: true
 
 jobs:
diff --git a/.github/workflows/pr-open.yml b/.github/workflows/pr-open.yml
index 2b4a4ee86d..fe477d8b5f 100644
--- a/.github/workflows/pr-open.yml
+++ b/.github/workflows/pr-open.yml
@@ -4,7 +4,8 @@ on:
   pull_request:
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
+  # PR open and close use the same group, allowing only one at a time
+  group: pr-${{ github.ref }}
   cancel-in-progress: true
 
 jobs: