diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 01d2c669..75710cf5 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -31,12 +31,13 @@ jobs:
             hugo-version: '0.98.0'
             extended: true
 
-      # Runs pre-processing python scripts to ensure (1) date accuracy, and (2) category descriptions are always up-to-date
+      # Runs pre-processing python scripts to ensure (1) date accuracy, and (2) category descriptions are always up-to-date, and (3) the packages have valid categories
       - name: Python pre-processing
         run: |
           python --version
           python ./build_steps/update_category_mappings.py
           python ./build_steps/update_recently_added_json.py
+          python ./build_steps/validate_package_catagories.py
             
       # Builds arm-software-developer repo
       - name: Build