diff --git a/.github/workflows/schemas.yml b/.github/workflows/schemas.yml
index 3741ec6..ebe6f89 100644
--- a/.github/workflows/schemas.yml
+++ b/.github/workflows/schemas.yml
@@ -16,7 +16,7 @@ on:
     types: [generate-pipeline-schemas]
 
 env:
-  HAYSTACK_REF: ${{ github.event.client_payload.ref || inputs.ref || 'main' }}
+  HAYSTACK_REF: ${{ github.event.client_payload.ref || inputs.ref || 'v1.x' }}
   SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
 
 jobs:
@@ -40,8 +40,14 @@ jobs:
       - if: steps.validate.outcome == 'success'
         name: Update schema
         run: |
+          if [ "${HAYSTACK_REF}" == "v1.x" ]; then
+            export HAYSTACK_REF="main"
+          fi
           docker run -t -v "${PWD}:/haystack-json-schema" "docker.io/deepset/haystack:base-cpu-${HAYSTACK_REF}" python /haystack-json-schema/.github/utils/generate_json_schema.py
-
+          if [ "${HAYSTACK_REF}" == "main" ]; then
+            export HAYSTACK_REF="v1.x"
+          fi
+          
       - if: steps.validate.outcome == 'success'
         name: Commit files
         run: |