diff --git a/.github/workflows/nuget-publish.yaml b/.github/workflows/nuget-publish.yaml
index cf96a14..bc68a61 100644
--- a/.github/workflows/nuget-publish.yaml
+++ b/.github/workflows/nuget-publish.yaml
@@ -6,11 +6,11 @@ on:
 
 jobs:
   publish:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     steps:
       - name: Checkout OpenActive.NET
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # avoid shallow clone so nbgv can do its work.
 
@@ -73,7 +73,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Trigger tooling update
-        uses: peter-evans/repository-dispatch@v1
+        uses: peter-evans/repository-dispatch@v3
         with:
           token: ${{ secrets.PUBLIC_REPO_ACCESS_TOKEN }}
           repository: openactive/${{ matrix.repo }}
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 00d8165..e7ae731 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -6,7 +6,7 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     steps:
     - name: Checkout OpenActive.Server.NET