diff --git a/.github/workflows/validate_json.yml b/.github/workflows/validate_json.yml
index 617cd92..814b5f6 100644
--- a/.github/workflows/validate_json.yml
+++ b/.github/workflows/validate_json.yml
@@ -13,6 +13,26 @@ jobs:
     steps:
       - uses: actions/checkout@v3
         with:
-          path: './'
-      - run: |
-          cat sellers.json | jq -e
\ No newline at end of file
+          ref: ${{ github.head_ref }}
+          path: ads
+
+      - name: Validate JSON
+        id: json-validate
+        working-directory: ads
+        run: |
+          cat sellers.json | jq -e
+
+      - name: Update JSON Timestamp
+        id: json-timestamp
+        working-directory: ads
+        run: |
+          cat sellers.json | jq '.ext.last_updated = (now | todate)' | tee sellers.json
+
+      - name: Push Changes to PR
+        working-directory: ads
+        run: |
+          git config user.name github-actions
+          git config user.email github-actions@github.com
+          git remote set-url origin https://x-access-token:${{ secrets.GH_TOKEN }}@github.com/${{ github.repository }}
+          git commit -am "Update sellers.json timestamp"
+          git push
\ No newline at end of file
diff --git a/sellers.json b/sellers.json
index 51d7490..69dc47d 100644
--- a/sellers.json
+++ b/sellers.json
@@ -2,7 +2,7 @@
   "contact_address": "401 Broadway, Suite 1100, New York, NY, 10013",
   "contact_email": "advertising@nimbus.co",
   "ext": {
-    "last_updated": "02-20-2024"
+    "last_updated": "2024-02-20T16:35:25Z"
   },
   "identifiers": [
     {
@@ -216,5 +216,5 @@
       "seller_type": "PUBLISHER"
     }
   ],
-  "version": 1.0
-}
\ No newline at end of file
+  "version": 1
+}