diff --git a/.github/workflows/npm-test.yml b/.github/workflows/npm-test.yml
index ad6953a..3ba9b9c 100644
--- a/.github/workflows/npm-test.yml
+++ b/.github/workflows/npm-test.yml
@@ -12,7 +12,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Use Node.js 18.x
       uses: actions/setup-node@v1
diff --git a/.github/workflows/validate-new-dataset.yml b/.github/workflows/validate-new-dataset.yml
index ab6330b..3396bb6 100644
--- a/.github/workflows/validate-new-dataset.yml
+++ b/.github/workflows/validate-new-dataset.yml
@@ -16,12 +16,12 @@ jobs:
         node-version: 18
   
     - name: Checkout PR branch
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         path: new
 
     - name: Checkout master branch
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         ref: master
         path: old
@@ -48,7 +48,7 @@ jobs:
         old_json_file: './old/singular-test.jsonld'
 
     - name: Checkout OpenActive Test Suite
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       if: ${{ steps.dataset.outputs.url || steps.dataset-preview.outputs.url || steps.dataset-test.outputs.url }}
       with:
         repository: openactive/openactive-test-suite
@@ -69,7 +69,7 @@ jobs:
       working-directory: tests
       
     - name: Upload validation results as artifact upon failure
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       if: ${{ failure() && (steps.dataset.outputs.url || steps.dataset-preview.outputs.url || steps.dataset-test.outputs.url) }}
       with:
         name: validation-results
diff --git a/pull_request_template.md b/pull_request_template.md
index 230897c..8c190a7 100644
--- a/pull_request_template.md
+++ b/pull_request_template.md
@@ -5,8 +5,10 @@ I confirm the following:
 - [ ] My open data feeds conform to one of the permissable combinations specified in https://developer.openactive.io/publishing-data/data-feeds/types-of-feed
 - [ ] My open data feeds all pass the OpenActive Validator's model validation (https://validator.openactive.io/)
 - [ ] My open data feeds all pass the OpenActive Validator's RPDE feed validation (https://validator.openactive.io/rpde)
+- [ ] My open data feeds all pass the OpenActive Test Suite's deep validation (https://developer.openactive.io/publishing-data/data-feeds/testing-feeds#openactive-test-suite)
 - [ ] My open data feeds include activity list references as specified in https://developer.openactive.io/publishing-data/activity-list-references
 - [ ] My dataset site(s) each reference a GitHub Issues Board
+- [ ] I have checked that the times in the feed `startDate` and `endDate` match the times on the website referenced by the `url`, and can confirm that there are no timezone issues
 
 ## Maintenance Checklist