diff --git a/.github/workflows/update_json_date.yml b/.github/workflows/update_json_date.yml
index 647f88e3..f65fdefc 100644
--- a/.github/workflows/update_json_date.yml
+++ b/.github/workflows/update_json_date.yml
@@ -1,4 +1,4 @@
-name: Auto Update JSON-Dateien (new files only)
+name: Auto Update JSON-Dates
 
 on:
   push:
@@ -25,7 +25,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
         with:
-          fetch-depth: 0  # Fetch full history to check commit timestamps
+          fetch-depth: 0  # Fetch full history for commit checks
 
       - name: Set up Git
         run: |
@@ -38,7 +38,9 @@ jobs:
           TODAY=$(date -u +"%Y-%m-%d")
           > new_json_files.txt
 
-          for FILE in $(git ls-files --json | jq -r '.[]'); do
+          git fetch origin main --depth=1
+
+          for FILE in $(git log --since="$TODAY 00:00:00" --diff-filter=A --name-only --pretty=format: origin/main -- json/*.json || true); do
             COMMIT_DATE=$(git log --format=%cI -- "$FILE" | tail -n 1 | cut -dT -f1)
             if [[ "$COMMIT_DATE" == "$TODAY" ]]; then
               echo "$FILE" >> new_json_files.txt