diff --git a/.github/workflows/integration-test.yml b/.github/workflows/integration-test.yml
index 9bb23048..b579f817 100644
--- a/.github/workflows/integration-test.yml
+++ b/.github/workflows/integration-test.yml
@@ -67,7 +67,7 @@ jobs:
 
       # Workaround for https://github.com/actions/runner-images/issues/2821
       - name: Remove mono blocking 8084 port
-        run: sudo kill -9 $(sudo lsof -t -i:8084)
+        run: sudo kill -s 9 $(sudo lsof -t -i:8084)
 
       - name: Set up Docker
         run: |
@@ -113,7 +113,7 @@ jobs:
 
       # Workaround for https://github.com/actions/runner-images/issues/2821
       - name: Remove mono blocking 8084 port
-        run: sudo kill -9 $(sudo lsof -t -i:8084)
+        run: sudo kill -s 9 $(sudo lsof -t -i:8084)
 
       - name: Set up Docker
         run: |
diff --git a/.github/workflows/pr-test.yml b/.github/workflows/pr-test.yml
index 3a01198a..52ea32b8 100644
--- a/.github/workflows/pr-test.yml
+++ b/.github/workflows/pr-test.yml
@@ -65,7 +65,7 @@ jobs:
 
       # Workaround for https://github.com/actions/runner-images/issues/2821
       - name: Remove mono blocking 8084 port
-        run: sudo kill -9 $(sudo lsof -t -i:8084)
+        run: sudo kill -s 9 $(sudo lsof -t -i:8084)
 
       - name: Set up Docker
         run: |
@@ -111,7 +111,7 @@ jobs:
 
       # Workaround for https://github.com/actions/runner-images/issues/2821
       - name: Remove mono blocking 8084 port
-        run: sudo kill -9 $(sudo lsof -t -i:8084)
+        run: sudo kill -s 9 $(sudo lsof -t -i:8084)
 
       - name: Set up Docker
         run: |
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 8b909fe2..4e39cd80 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -46,7 +46,7 @@ jobs:
 
       # Workaround for https://github.com/actions/runner-images/issues/2821
       - name: Remove mono blocking 8084 port
-        run: sudo kill -9 $(sudo lsof -t -i:8084)
+        run: sudo kill -s 9 $(sudo lsof -t -i:8084)
 
       - name: Set up Docker
         run: |
@@ -92,7 +92,7 @@ jobs:
 
       # Workaround for https://github.com/actions/runner-images/issues/2821
       - name: Remove mono blocking 8084 port
-        run: sudo kill -9 $(sudo lsof -t -i:8084)
+        run: sudo kill -s 9 $(sudo lsof -t -i:8084)
 
       - name: Set up Docker
         run: |