diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ef3d1aa..0c59160 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -52,11 +52,11 @@ jobs:
 
   tests:
     runs-on: ubuntu-latest
-    # needs:
-    #   - changed-files
+    needs:
+      - changed-files
 
-    # # only run tests if source files have changed (e.g. skip for PRs that only update docs)
-    # if: ${{ needs.changed-files.outputs.changed-py-files == 'true'|| needs.changed-files.outputs.changed-requirements == 'true'|| github.event_name == 'push' }}
+    # only run tests if source files have changed (e.g. skip for PRs that only update docs)
+    if: ${{ needs.changed-files.outputs.changed-py-files == 'true'|| needs.changed-files.outputs.changed-requirements == 'true'|| github.event_name == 'push' }}
 
     strategy:
       matrix:
diff --git a/src/referentielijsten/api/filterset.py b/src/referentielijsten/api/filterset.py
index 94c66df..a6b5449 100644
--- a/src/referentielijsten/api/filterset.py
+++ b/src/referentielijsten/api/filterset.py
@@ -34,9 +34,7 @@ class ItemFilterset(FilterSet):
         method="filter_is_geldig",
     )
     tabel__code = filters.CharFilter(
-        help_text=_(
-            "De waarde van de `tabel__code` die gelinkt is aan de items: VERPLICHT"
-        ),
+        help_text=_("De waarde van de `tabel__code` die gelinkt is aan de items."),
         required=True,
     )
 
diff --git a/src/referentielijsten/api/models.py b/src/referentielijsten/api/models.py
index a6eb144..40544ae 100644
--- a/src/referentielijsten/api/models.py
+++ b/src/referentielijsten/api/models.py
@@ -95,14 +95,12 @@ class Item(models.Model):
     begindatum_geldigheid = models.DateTimeField(
         _("begindatum geldigheid"),
         help_text=_("De datum vanaf waneer deze tabel geldig is."),
-        editable=True,
         blank=True,
         null=True,
     )
     einddatum_geldigheid = models.DateTimeField(
         _("einddatum geldigheid"),
         help_text=_("De datum tot wanneer deze tabel geldig is."),
-        editable=True,
         blank=True,
         null=True,
     )
diff --git a/src/referentielijsten/api/openapi.yaml b/src/referentielijsten/api/openapi.yaml
index fe947a1..7f63993 100644
--- a/src/referentielijsten/api/openapi.yaml
+++ b/src/referentielijsten/api/openapi.yaml
@@ -30,8 +30,7 @@ paths:
         name: tabel__code
         schema:
           type: string
-        description: 'De waarde van de `tabel__code` die gelinkt is aan de items:
-          VERPLICHT'
+        description: De waarde van de `tabel__code` die gelinkt is aan de items.
         required: true
       tags:
       - items
diff --git a/src/referentielijsten/conf/base.py b/src/referentielijsten/conf/base.py
index 8eb4f6d..146aa89 100644
--- a/src/referentielijsten/conf/base.py
+++ b/src/referentielijsten/conf/base.py
@@ -107,7 +107,6 @@
     # Optional applications.
     "ordered_model",
     "django_admin_index",
-    "django_jsonform",
     "django.contrib.admin",
     # 'django.contrib.admindocs',
     # 'django.contrib.humanize',
diff --git a/src/referentielijsten/js/components/nav/index.js b/src/referentielijsten/js/components/nav/index.js
index fc35ccd..8032df8 100644
--- a/src/referentielijsten/js/components/nav/index.js
+++ b/src/referentielijsten/js/components/nav/index.js
@@ -22,7 +22,6 @@ class TabNav {
     }
 
     setActive(tabButton) {
-        console.log("tabNode=", tabButton);
         // make inactive all tabs and contents
         this.tabButtons.forEach((btn) => {
             btn.classList.remove("nav__item--active");