diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index abd96b3e..36b3d5e1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,11 +12,8 @@ jobs:
       fail-fast: false
       matrix:
         config:
-          - { compiler: gcc, version: 7, build_type: Release, cppstd: 11 }
-          - { compiler: gcc, version: 9, build_type: Release, cppstd: 17 }
           - { compiler: gcc, version: 11, build_type: Debug, cppstd: 20 }
           - { compiler: gcc, version: 12, build_type: Release, cppstd: 20 }
-          - { compiler: clang, version: 12, build_type: Debug, cppstd: 17, asan: OFF }
           - { compiler: clang, version: 15, build_type: Release, cppstd: 20, asan: OFF }
     container:
       image: ${{ matrix.config.compiler == 'clang' && 'teeks99/clang-ubuntu' || matrix.config.compiler }}:${{ matrix.config.version }}