diff --git a/.github/workflows/update-index.yml b/.github/workflows/update-index.yml
index 98ab0f6..45238d2 100644
--- a/.github/workflows/update-index.yml
+++ b/.github/workflows/update-index.yml
@@ -18,24 +18,47 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y jq
+          wget https://github.com/mikefarah/yq/releases/latest/download/yq_linux_amd64 -O /usr/bin/yq
+          chmod +x /usr/bin/yq
+
       - name: Generate data index
         run: |
           cd data
-          # Get directories and their last modified dates, sort by date descending
-          dirs=$(for d in */; do
-            # Get last modified date of any file in directory
-            last_mod=$(git log -1 --format=%at -- "$d")
-            echo "$last_mod $d"
-          done | sort -rn | cut -d' ' -f2 | sed 's/\///g')
-          
-          # Create JSON array
-          echo -n '['> index.json
-          echo "$dirs" | sed 's/^/    "/;s/$/",/' | sed '$s/,$//' >> index.json
+          # Initialize JSON array
+          echo -n '[' > index.json
+
+          # Iterate through directories and parse frontmatter
+          first=true
+          for d in */; do
+            # Check if README.md exists
+            if [ -f "$d/README.md" ]; then
+              # Extract frontmatter (between --- lines) and convert to JSON
+              frontmatter=$(awk '/^---$/{if (p) exit; p=1; next}p' "$d/README.md" | yq eval -o=json)
+              
+              if [ ! -z "$frontmatter" ]; then
+                # Add comma if not the first entry
+                if [ "$first" = false ]; then
+                  echo -n ',' >> index.json
+                fi
+                first=false
+
+                # Add directory name and frontmatter to JSON
+                echo -n "{\"directory\": \"${d%/}\", \"frontmatter\": $frontmatter}" >> index.json
+              fi
+            fi
+          done
+
+          # Close JSON array
           echo ']' >> index.json
           
       - name: Commit changes
         run: |
           git config --global user.name 'GitHub Actions'
           git config --global user.email 'actions@github.com'
+          git checkout -b update-index || git checkout update-index
           git add data/index.json
-          git diff --staged --quiet || (git commit -m "Update data index" && git push)
+          git diff --staged --quiet || (git commit -m "Update data index with frontmatter" && git push origin update-index)