diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 78867fe4bf..6f77c26f5a 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -34,7 +34,7 @@ jobs:
   # ref: https://quay.io/organization/jupyterhub
 
   publish:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
         with:
diff --git a/.github/workflows/release-tag.yml b/.github/workflows/release-tag.yml
index a5b6869705..970dc44d8b 100644
--- a/.github/workflows/release-tag.yml
+++ b/.github/workflows/release-tag.yml
@@ -9,7 +9,7 @@ on:
 
 jobs:
   create-release:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     permissions:
       contents: write
     steps:
diff --git a/.github/workflows/support-bot.yml b/.github/workflows/support-bot.yml
index 5f76c578e4..47b7746859 100644
--- a/.github/workflows/support-bot.yml
+++ b/.github/workflows/support-bot.yml
@@ -10,7 +10,7 @@ permissions:
 
 jobs:
   action:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - uses: dessant/support-requests@v4
         with:
diff --git a/.github/workflows/test-chart.yaml b/.github/workflows/test-chart.yaml
index 8e92dde51c..57a2b6478c 100644
--- a/.github/workflows/test-chart.yaml
+++ b/.github/workflows/test-chart.yaml
@@ -28,7 +28,7 @@ on:
 
 jobs:
   lint_shell_scripts:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -42,7 +42,7 @@ jobs:
         run: pre-commit run --all --hook-stage manual
 
   lint_and_validate_rendered_templates:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -60,7 +60,7 @@ jobs:
         continue-on-error: true
 
   lint_and_validate_templates_with_schema:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     strategy:
       fail-fast: false
@@ -114,7 +114,7 @@ jobs:
         continue-on-error: true
 
   test:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     timeout-minutes: 20
 
     strategy:
diff --git a/.github/workflows/test-docker-build.yaml b/.github/workflows/test-docker-build.yaml
index b8001b1bf2..f0681b928b 100644
--- a/.github/workflows/test-docker-build.yaml
+++ b/.github/workflows/test-docker-build.yaml
@@ -29,7 +29,7 @@ jobs:
   # - https://github.com/docker/build-push-action/blob/v2.3.0/docs/advanced/local-registry.md
   # - https://github.com/docker/build-push-action/blob/v2.3.0/docs/advanced/multi-platform.md
   build_images:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
         with:
diff --git a/.github/workflows/test-docs.yaml b/.github/workflows/test-docs.yaml
index b5e5662a73..7f27adb743 100644
--- a/.github/workflows/test-docs.yaml
+++ b/.github/workflows/test-docs.yaml
@@ -25,7 +25,7 @@ on:
 
 jobs:
   linkcheck:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
         with:
diff --git a/.github/workflows/vuln-scan.yaml b/.github/workflows/vuln-scan.yaml
index 18cbfe4efa..b28eab467e 100644
--- a/.github/workflows/vuln-scan.yaml
+++ b/.github/workflows/vuln-scan.yaml
@@ -32,7 +32,7 @@ on:
 jobs:
   trivy_image_scan:
     if: github.repository == 'jupyterhub/zero-to-jupyterhub-k8s'
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     environment: watch-dependencies
 
     strategy:
diff --git a/.github/workflows/watch-dependencies.yaml b/.github/workflows/watch-dependencies.yaml
index 5f1907b9c5..818034c749 100644
--- a/.github/workflows/watch-dependencies.yaml
+++ b/.github/workflows/watch-dependencies.yaml
@@ -32,7 +32,7 @@ jobs:
   update-image-dependencies:
     # Don't run this job on forks
     if: github.repository == 'jupyterhub/zero-to-jupyterhub-k8s'
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     environment: watch-dependencies
 
     strategy:
@@ -202,7 +202,7 @@ jobs:
     # these dependencies every day is too much noise.
     #
     if: github.repository == 'jupyterhub/zero-to-jupyterhub-k8s' && github.event_name != 'schedule'
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     environment: watch-dependencies
 
     steps:
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 66af176525..28aa09e453 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -8,7 +8,7 @@ sphinx:
   configuration: docs/source/conf.py
 
 build:
-  os: ubuntu-22.04
+  os: ubuntu-24.04
   tools:
     python: "3.10"