diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 862a0c0..ef97e88 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -40,7 +40,6 @@ jobs:
         compiler: ['15', '14', '13', '12', '11']
         standard: ['11', '14', '17', '20']
         precompile: ['ON', 'OFF']
-        betafeature: ['ON', 'OFF']
         exclude:
             - {compiler: '14', standard: '20'} # to avoid using gcc-13 libstdc++
             - {compiler: '13', standard: '20'} # with older clang
@@ -61,7 +60,7 @@ jobs:
             sudo apt-get install clang-${{ matrix.compiler }}
       - name: Configure
         run: |
-            cmake -B build/ -DCMAKE_CXX_COMPILER=clang++-${{ matrix.compiler }} -DCMAKE_CXX_STANDARD=${{ matrix.standard }} -DTOML11_BUILD_TESTS=ON -DTOML11_PRECOMPILE=${{ matrix.precompile }} -DTOML11_ENABLE_ACCESS_CHECK=${{ matrix.betafeature }}
+            cmake -B build/ -DCMAKE_CXX_COMPILER=clang++-${{ 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 }}
@@ -75,7 +74,6 @@ jobs:
         compiler: ['g++-8', 'g++-7']
         standard: ['11', '14', '17', '20']
         precompile: ['ON', 'OFF']
-        betafeature: ['ON', 'OFF']
         exclude:
             - {compiler: 'g++-7', standard: '20'}
             - {compiler: 'g++-8', standard: '17'}
@@ -95,7 +93,7 @@ jobs:
             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 }} -DTOML11_ENABLE_ACCESS_CHECK=${{ matrix.betafeature }}
+            cmake -B build/ -DCMAKE_CXX_COMPILER=${{ matrix.compiler }} -DCMAKE_CXX_STANDARD=${{ matrix.standard }} -DTOML11_BUILD_TESTS=ON -DTOML11_PRECOMPILE=${{ matrix.precompile }}
       - name: Build
         run: |
             cmake --build build/ -j${{ steps.cpu-cores.outputs.count }}
@@ -110,7 +108,6 @@ jobs:
         compiler: ['10', '9', '8', '7', '6.0']
         standard: ['11', '14', '17', '20']
         precompile: ['ON', 'OFF']
-        betafeature: ['ON', 'OFF']
         exclude:
             - {compiler: '6.0', standard: '20'}
             - {compiler: '7',   standard: '20'}
@@ -131,7 +128,7 @@ jobs:
             sudo apt-get install clang-${{ matrix.compiler }}
       - name: Configure
         run: |
-            cmake -B build/ -DCMAKE_CXX_COMPILER=clang++-${{ matrix.compiler }} -DCMAKE_CXX_STANDARD=${{ matrix.standard }} -DTOML11_BUILD_TESTS=ON -DTOML11_PRECOMPILE=${{ matrix.precompile }} -DTOML11_ENABLE_ACCESS_CHECK=${{ matrix.betafeature }}
+            cmake -B build/ -DCMAKE_CXX_COMPILER=clang++-${{ matrix.compiler }} -DCMAKE_CXX_STANDARD=${{ matrix.standard }} -DTOML11_BUILD_TESTS=ON -DTOML11_PRECOMPILE=${{ matrix.precompile }}
       - name: Build
         run: |
             cmake --build build/ -j${{ steps.cpu-cores.outputs.count }}
@@ -170,7 +167,6 @@ jobs:
       matrix:
         standard: ['11', '14', '17', '20']
         precompile: ['ON', 'OFF']
-        betafeature: ['ON', 'OFF']
     steps:
       - name: Get number of CPU cores
         uses: SimenB/github-actions-cpu-cores@v2
@@ -181,7 +177,7 @@ jobs:
           submodules: true
       - name: Configure
         run: |
-            cmake -B build/ -DCMAKE_CXX_STANDARD=${{ matrix.standard }} -DTOML11_BUILD_TESTS=ON -DTOML11_PRECOMPILE=${{ matrix.precompile }} -DTOML11_ENABLE_ACCESS_CHECK=${{ matrix.betafeature }}
+            cmake -B build/ -DCMAKE_CXX_STANDARD=${{ matrix.standard }} -DTOML11_BUILD_TESTS=ON -DTOML11_PRECOMPILE=${{ matrix.precompile }}
       - name: Build
         run: |
             cmake --build build/ -j${{ steps.cpu-cores.outputs.count }}