diff --git a/.forgejo/workflows/main.yml b/.forgejo/workflows/main.yml
index d8bd266..6ffc8cd 100644
--- a/.forgejo/workflows/main.yml
+++ b/.forgejo/workflows/main.yml
@@ -20,12 +20,12 @@ jobs:
       - name: Add Upstream and Fetch
         run: |
           git remote add upstream https://github.com/cinnyapp/cinny.git
-          git fetch upstream main
+          git fetch upstream dev
 
       - name: Check for Changes and Push Branch
         id: check_changes
         run: |
-          if ! git diff --quiet HEAD upstream/main; then
+          if ! git diff --quiet HEAD upstream/dev; then
             echo "New changes detected in upstream."
             
             BRANCH_NAME="upstream-sync-$(date +'%Y%m%d%H%M')"
@@ -33,7 +33,7 @@ jobs:
             echo "has_changes=true" >> $GITHUB_OUTPUT
             
             git checkout -b $BRANCH_NAME
-            git merge upstream/main --no-edit
+            git merge upstream/dev --no-edit
             
             git push origin $BRANCH_NAME
           else
@@ -47,7 +47,7 @@ jobs:
           PR_TITLE="chore(deps): sync upstream changes ($(date +'%Y-%m-%d'))"
           PR_BODY="Upstream (cinnyapp/cinny)에 새로운 변경사항이 감지되어 자동으로 생성된 PR입니다."
           HEAD_BRANCH="${{ steps.check_changes.outputs.branch_name }}"
-          BASE_BRANCH="main"
+          BASE_BRANCH="dev"
           
           curl -X 'POST' \
             "${{ github.server_url }}/api/v1/repos/${{ github.repository }}/pulls" \