diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eb135b6aa..f459e3be1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -644,8 +644,8 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - { sys: MINGW32, toolset: gcc, cxxstd: '11,17,20' }
-          - { sys: MINGW64, toolset: gcc, cxxstd: '11,17,20' }
+          - { sys: MINGW32, toolset: gcc, cxxstd: '11,17,20,23' }
+          - { sys: MINGW64, toolset: gcc, cxxstd: '11,17,20,23' }
 
     runs-on: windows-latest