diff --git a/.github/workflows/cpp_ubuntu20_04.yml b/.github/workflows/cpp_ubuntu20_04.yml
index 703570f..f084351 100644
--- a/.github/workflows/cpp_ubuntu20_04.yml
+++ b/.github/workflows/cpp_ubuntu20_04.yml
@@ -16,7 +16,7 @@ jobs:
       fail-fast: true
       matrix:
         gcc: [ '8', '9', '10', '11', '12', '13' ]
-        cxx: [ '11', '14', '17', '20' ]
+        cxx: [ '11', '14', '17', '20', '23' ]
         ubuntu: [ '20.04', '22.04', '24.04']
         exclude:
           # Exclude GCC 8 on unsupported Ubuntu versions
@@ -36,6 +36,16 @@ jobs:
             cxx: '11'
           - ubuntu: '24.04'
             cxx: '14'
+          # Exclude all combinations of CXX 23 with GCC 8, 9, or 10
+          - gcc: '8'
+            cxx: '23'
+          - gcc: '9'
+            cxx: '23'
+          - gcc: '10'
+            cxx: '23'
+          # Exclude all combinations of CXX 23 with Ubuntu 20.04
+          - ubuntu: '20.04'
+            cxx: '23'
     container:
       image: omavteam/ubuntu-omav-ros:ros-ros-base-${{ matrix.ubuntu }}
       credentials: