diff --git a/.github/workflows/internal.yml b/.github/workflows/internal.yml
index d0a051f03..fcd4fe990 100644
--- a/.github/workflows/internal.yml
+++ b/.github/workflows/internal.yml
@@ -12,7 +12,7 @@ on:
 
 jobs: # A workflow run is made up of one or more jobs that can run sequentially or in parallel
   build: # This workflow contains a single job called "build"
-    runs-on: ubuntu-latest # The type of runner that the job will run on
+    runs-on: ubuntu-24.04 # The type of runner that the job will run on
     env:
       BUNDLE_WITH: test jekyll_plugins
       SITE_ID:  'api' # which iiif site this is
diff --git a/.github/workflows/linkrot.yml b/.github/workflows/linkrot.yml
index 1f6c7c0c6..9441bac71 100644
--- a/.github/workflows/linkrot.yml
+++ b/.github/workflows/linkrot.yml
@@ -6,7 +6,7 @@ on:
 
 jobs:
   test_linkrot:
-    runs-on: ubuntu-latest # The type of runner that the job will run on
+    runs-on: ubuntu-24.04 # The type of runner that the job will run on
     steps:
       - name: Checkout
         uses: actions/checkout@v6
diff --git a/.github/workflows/live.yml b/.github/workflows/live.yml
index b72bb59bd..9871891cf 100644
--- a/.github/workflows/live.yml
+++ b/.github/workflows/live.yml
@@ -12,7 +12,7 @@ on:
 
 jobs: # A workflow run is made up of one or more jobs that can run sequentially or in parallel
   build: # This workflow contains a single job called "build"
-    runs-on: ubuntu-latest # The type of runner that the job will run on
+    runs-on: ubuntu-24.04 # The type of runner that the job will run on
     env:
       BUNDLE_WITH: test jekyll_plugins
       SITE_ID:  'api' # which iiif site this is
diff --git a/.github/workflows/preview.yml b/.github/workflows/preview.yml
index 7b4170d5e..00fbb9f6c 100644
--- a/.github/workflows/preview.yml
+++ b/.github/workflows/preview.yml
@@ -13,7 +13,7 @@ on:
 
 jobs: # A workflow run is made up of one or more jobs that can run sequentially or in parallel
   build: # This workflow contains a single job called "build"
-    runs-on: ubuntu-latest # The type of runner that the job will run on
+    runs-on: ubuntu-24.04 # The type of runner that the job will run on
     env:
       BUNDLE_WITH: test jekyll_plugins
       SITE_ID:  'api' # which iiif site this is
diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index cf5b02354..6604b977a 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -6,7 +6,7 @@ on:
 
 jobs:
   validate:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     env:
       BUNDLE_WITH: test jekyll_plugins
       SITE_ID:  'cookbook' # which iiif site this is