diff --git a/action.yml b/action.yml
index c2244aa..de552b7 100644
--- a/action.yml
+++ b/action.yml
@@ -71,4 +71,4 @@ inputs:
     default: ${{ github.token }}
 runs:
   using: 'docker'
-  image: 'docker://ghcr.io/contrast-security-oss/contrast-local-scan-action:sha-d2d24005fccf69c0f916bed5c97e720cc231b18b'
+  image: 'docker://ghcr.io/contrast-security-oss/contrast-local-scan-action:sha-9215789c436d9755e0f330b883793def98718018'
diff --git a/src/config.js b/src/config.js
index ebad913..9c46835 100644
--- a/src/config.js
+++ b/src/config.js
@@ -18,7 +18,7 @@ const getRef = () => {
     }
     default: {
       core.warning(`Received unexpected github event ${github.context.eventName}`);
-      return github.context.payload?.ref;
+      return github.context.payload?.ref || github.context.ref;
     }
   }
 };
@@ -26,10 +26,18 @@ const getRef = () => {
 const thisBranchName = () => {
 
   const ref = getRef();
+  
+  try {
+
+    const refParts = ref.split('/');
 
-  const refParts = ref.split('/');
+    return refParts[refParts.length-1];
+  }
+  catch (error) {
+    core.error(`Unable to get current branch name from ref ${ref} : ${error.message}`);
+  }
 
-  return refParts[refParts.length-1];
+  return DEFAULT_BRANCH_NAME
 };
 
 const isDefaultBranch = () => {