diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index 4e4918c3c..50b12754d 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -16,9 +16,11 @@ concurrency:
 jobs:
   ci_test_clang:
     runs-on: ubuntu-latest
-    container: ghcr.io/nlohmann/json-ci:v2.4.0
+    container: silkeh/clang:latest
     steps:
       - uses: actions/checkout@v3
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@latest
       - name: Run CMake
         run: cmake -S . -B build -DJSON_CI=On
       - name: Build
@@ -26,9 +28,11 @@ jobs:
 
   ci_test_gcc:
     runs-on: ubuntu-latest
-    container: ghcr.io/nlohmann/json-ci:v2.4.0
+    container: gcc:latest
     steps:
       - uses: actions/checkout@v3
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@latest
       - name: Run CMake
         run: cmake -S . -B build -DJSON_CI=On
       - name: Build