diff --git a/.github/workflows/language-data.yml b/.github/workflows/language-data.yml
index dfe8a4f49c..b9757c2634 100644
--- a/.github/workflows/language-data.yml
+++ b/.github/workflows/language-data.yml
@@ -15,6 +15,9 @@ jobs:
       - name: Download
         run: curl -o locale/language-data.json https://raw.githubusercontent.com/wikimedia/language-data/refs/heads/master/data/language-data.json
 
+      - name: Validate
+        run: jq -ce . locale/language-data.json
+
       - name: Pull Request
         uses: peter-evans/create-pull-request@v7
         with: