diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 38c9028..e4b8a0f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,10 +4,10 @@ on: [push, pull_request]
 
 jobs:
   build-linux-gcc:
-    runs-on: Ubuntu-22.04
+    runs-on: Ubuntu-24.04
     strategy:
       matrix:
-        compiler: ['g++-12', 'g++-11', 'g++-10', 'g++-9']
+        compiler: ['g++-14', 'g++-13', 'g++-12', 'g++-11', 'g++-10', 'g++-9']
         standard: ['11', '14', '17', '20']
         precompile: ['ON', 'OFF']
         betafeature: ['ON', 'OFF']
@@ -35,10 +35,10 @@ jobs:
             ctest --output-on-failure --test-dir build/
 
   build-linux-gcc-sanitizers:
-    runs-on: Ubuntu-22.04
+    runs-on: Ubuntu-24.04
     strategy:
       matrix:
-        compiler: ['g++-12']
+        compiler: ['g++-13']
         standard: ['11', '14', '17', '20']
         precompile: ['ON', 'OFF']
         betafeature: ['ON', 'OFF']
@@ -71,10 +71,10 @@ jobs:
             ctest --output-on-failure --test-dir build/
 
   build-linux-clang:
-    runs-on: Ubuntu-22.04
+    runs-on: Ubuntu-24.04
     strategy:
       matrix:
-        compiler: ['15', '14', '13', '12', '11']
+        compiler: ['19', '18', '17', '16', '15']
         standard: ['11', '14', '17', '20']
         precompile: ['ON', 'OFF']
         exclude:
@@ -104,52 +104,19 @@ jobs:
       - name: Test
         run: |
             ctest --output-on-failure --test-dir build/
-  build-linux-old-gcc:
-    runs-on: Ubuntu-20.04
-    strategy:
-      matrix:
-        compiler: ['g++-8', 'g++-7']
-        standard: ['11', '14', '17', '20']
-        precompile: ['ON', 'OFF']
-        exclude:
-            - {compiler: 'g++-7', standard: '20'}
-            - {compiler: 'g++-8', standard: '17'}
-            - {compiler: 'g++-8', standard: '20'}
-    steps:
-      - name: Get number of CPU cores
-        uses: SimenB/github-actions-cpu-cores@v2
-        id: cpu-cores
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          submodules: true
-      - name: Install
-        run: |
-            sudo apt-get update
-            sudo apt-get install language-pack-fr # test serializer w/ locale
-            sudo apt-get install ${{ matrix.compiler }}
-      - name: Configure
-        run: |
-            cmake -B build/ -DCMAKE_CXX_COMPILER=${{ matrix.compiler }} -DCMAKE_CXX_STANDARD=${{ matrix.standard }} -DTOML11_BUILD_TESTS=ON -DTOML11_PRECOMPILE=${{ matrix.precompile }}
-      - name: Build
-        run: |
-            cmake --build build/ -j${{ steps.cpu-cores.outputs.count }}
-      - name: Test
-        run: |
-            ctest --output-on-failure --test-dir build/
 
   build-linux-old-clang:
-    runs-on: Ubuntu-20.04
+    runs-on: Ubuntu-22.04
     strategy:
       matrix:
-        compiler: ['10', '9', '8', '7', '6.0']
+        compiler: ['14', '13', '12', '11']
         standard: ['11', '14', '17', '20']
         precompile: ['ON', 'OFF']
         exclude:
-            - {compiler: '6.0', standard: '20'}
-            - {compiler: '7',   standard: '20'}
-            - {compiler: '8',   standard: '20'}
-            - {compiler: '9',   standard: '20'}
+            - {compiler: '14', standard: '20'}
+            - {compiler: '13', standard: '20'}
+            - {compiler: '12', standard: '20'}
+            - {compiler: '11', standard: '20'}
     steps:
       - name: Get number of CPU cores
         uses: SimenB/github-actions-cpu-cores@v2