diff --git a/.github/workflows/containers.yml b/.github/workflows/containers.yml
index c643d1eeca..1aee8de91c 100644
--- a/.github/workflows/containers.yml
+++ b/.github/workflows/containers.yml
@@ -15,7 +15,7 @@ env:
 
 jobs:
   container:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     permissions:
       contents: read
       packages: write
diff --git a/.github/workflows/ovn-fake-multinode-tests.yml b/.github/workflows/ovn-fake-multinode-tests.yml
index 9a5cd83a65..25610df534 100644
--- a/.github/workflows/ovn-fake-multinode-tests.yml
+++ b/.github/workflows/ovn-fake-multinode-tests.yml
@@ -13,7 +13,7 @@ concurrency:
 jobs:
   build:
     name: Build ovn-fake-multinode image
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
         cfg:
@@ -69,7 +69,7 @@ jobs:
         path: /tmp/_output/ovn_${{ matrix.cfg.branch }}_image.tar
 
   multinode-tests:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     timeout-minutes: 15
     needs: [build]
     strategy:
@@ -158,7 +158,7 @@ jobs:
     - name: set up python
       uses: actions/setup-python@v4
       with:
-        python-version: '3.x'
+        python-version: '3.12'
 
     - name: Check out ovn
       uses: actions/checkout@v3
diff --git a/.github/workflows/ovn-kubernetes.yml b/.github/workflows/ovn-kubernetes.yml
index d9a91874ff..1689396d66 100644
--- a/.github/workflows/ovn-kubernetes.yml
+++ b/.github/workflows/ovn-kubernetes.yml
@@ -24,7 +24,7 @@ env:
 jobs:
   build:
     name: Build
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
     - name: Enable Docker experimental features
       run: |
@@ -62,7 +62,7 @@ jobs:
   e2e:
     name: e2e
     if: github.event_name != 'schedule'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     timeout-minutes: 220
     strategy:
       fail-fast: false
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index fe2a14c401..53e676eccc 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -94,7 +94,7 @@ jobs:
       SANITIZERS:  ${{ matrix.cfg.sanitizers }}
 
     name: linux ${{ join(matrix.cfg.*, ' ') }}
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
 
     strategy:
       fail-fast: false
@@ -225,7 +225,7 @@ jobs:
     - name: set up python
       uses: actions/setup-python@v4
       with:
-        python-version: '3.x'
+        python-version: '3.12'
     - name: prepare
       run:  ./.ci/osx-prepare.sh
     - name: build
@@ -239,8 +239,8 @@ jobs:
 
   build-linux-rpm:
     name: linux rpm fedora
-    runs-on: ubuntu-latest
-    container: fedora:latest
+    runs-on: ubuntu-22.04
+    container: fedora:38
     timeout-minutes: 30
 
     strategy:
diff --git a/utilities/containers/fedora/Dockerfile b/utilities/containers/fedora/Dockerfile
index 4058d7f5be..3b39a9ea7a 100755
--- a/utilities/containers/fedora/Dockerfile
+++ b/utilities/containers/fedora/Dockerfile
@@ -1,4 +1,4 @@
-FROM quay.io/fedora/fedora:latest
+FROM registry.fedoraproject.org/fedora:38
 
 ARG CONTAINERS_PATH
 
diff --git a/utilities/containers/ubuntu/Dockerfile b/utilities/containers/ubuntu/Dockerfile
index 5d5bedbd9b..3c7fe77759 100755
--- a/utilities/containers/ubuntu/Dockerfile
+++ b/utilities/containers/ubuntu/Dockerfile
@@ -1,4 +1,4 @@
-FROM registry.hub.docker.com/library/ubuntu:latest
+FROM registry.hub.docker.com/library/ubuntu:22.04
 
 ARG CONTAINERS_PATH