diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e600030..c74268a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -216,7 +216,7 @@ jobs:
             addrmd: 32,64
             os: windows-2022
           - toolset: clang-win
-            cxxstd: "14,17,latest"
+            cxxstd: "14,17,20,latest"
             addrmd: 32,64
             os: windows-2022
           - toolset: gcc
@@ -266,6 +266,7 @@ jobs:
           - os: ubuntu-22.04
           - os: macos-11
           - os: macos-12
+          - os: macos-13
 
     runs-on: ${{matrix.os}}
 
@@ -313,6 +314,7 @@ jobs:
           - os: ubuntu-22.04
           - os: macos-11
           - os: macos-12
+          - os: macos-13
 
     runs-on: ${{matrix.os}}
 
@@ -370,6 +372,7 @@ jobs:
           - os: ubuntu-22.04
           - os: macos-11
           - os: macos-12
+          - os: macos-13
 
     runs-on: ${{matrix.os}}