diff --git a/.github/workflows/build-cloudberry-rocky8.yml b/.github/workflows/build-cloudberry-rocky8.yml
index dd4d10ab115..4986eae11b2 100644
--- a/.github/workflows/build-cloudberry-rocky8.yml
+++ b/.github/workflows/build-cloudberry-rocky8.yml
@@ -1676,6 +1676,7 @@ jobs:
 
       - name: Check and Display Regression Diffs
         if: always()
+        shell: bash {0}
         run: |
           # Search for regression.diffs recursively
           found_file=$(find . -type f -name "regression.diffs" | head -n 1)
diff --git a/.github/workflows/build-cloudberry.yml b/.github/workflows/build-cloudberry.yml
index cc99a997c3f..b0191a2d0e9 100644
--- a/.github/workflows/build-cloudberry.yml
+++ b/.github/workflows/build-cloudberry.yml
@@ -1679,6 +1679,7 @@ jobs:
 
       - name: Check and Display Regression Diffs
         if: always()
+        shell: bash {0}
         run: |
           # Search for regression.diffs recursively
           found_file=$(find . -type f -name "regression.diffs" | head -n 1)
diff --git a/.github/workflows/build-deb-cloudberry.yml b/.github/workflows/build-deb-cloudberry.yml
index 52db1819194..f8eadee3c8f 100644
--- a/.github/workflows/build-deb-cloudberry.yml
+++ b/.github/workflows/build-deb-cloudberry.yml
@@ -1618,6 +1618,7 @@ jobs:
 
       - name: Check and Display Regression Diffs
         if: always()
+        shell: bash {0}
         run: |
           # Search for regression.diffs recursively
           found_file=$(find . -type f -name "regression.diffs" | head -n 1)