diff --git a/.github/workflows/check_generated.yml b/.github/workflows/check_generated.yml
index 03a7a9c4..371e162d 100644
--- a/.github/workflows/check_generated.yml
+++ b/.github/workflows/check_generated.yml
@@ -1,5 +1,4 @@
-
-name: Check generated files
+name: Check mapfiles
 
 on:
   pull_request:
@@ -8,14 +7,15 @@ on:
       - master
 
 jobs:
-  check_generated:
+  check_maps:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
       with:
         python-version: 3.11
+        cache: "pip"
     # Some mapfiles are generated by scripts, but also committed to the repo.
     # Check for mismatches between committed files and script output.
     - name: Regenerate mapfiles and check for equality
@@ -31,8 +31,8 @@ jobs:
           fi
           python3 "$script" | cmp - "$mapfile"
         done
-    # This one is not committed, but generated by the Docker entrypoint.
-    # It should at least be valid JSON.
+    # The index.json file is not committed, but generated by the Docker
+    # entrypoint. It should at least be valid JSON.
     - name: Check index.json file
       run: |
         # Create some bogus connection files, or including them will fail:
@@ -40,4 +40,14 @@ jobs:
         for c in bag basiskaart dataselectie dataservices milieu monumenten nap panorama various_small_datasets; do
             echo CONNECTIONTYPE postgis > connection/$c.inc
         done
-        python3 tools/make_indexjson.py *.map | jq .
+        python3 tools/make_indexjson.py *.map | jq . > /dev/null
+    - name: Authorization checks
+      run: |
+        python3 -m pip install -r tools/requirements.txt
+        # adresseerbare_objecten and bgt_inrichtingselementen can't be parsed
+        # due to limitations in mappyfile.
+        # The other excluded maps should be fixed. They have workarounds in
+        # place to prevent access to restricted fields.
+        python3 tools/auth_check.py -e \
+          adresseerbare_objecten bgt_inrichtingselementen \
+          bomen brk2 ziektenplagenexotengroen