diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a8e4395d..67ac6a04 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -154,7 +154,7 @@ jobs:
       matrix:
         include:
           - toolset: msvc-14.0
-            cxxstd: 14
+            cxxstd: 14,latest
             addrmd: 32,64
             os: windows-2019
           - toolset: msvc-14.1
@@ -162,13 +162,17 @@ jobs:
             addrmd: 32,64
             os: windows-2016
           - toolset: msvc-14.2
-            cxxstd: "14,17,latest"
+            cxxstd: "14,17,20,latest"
             addrmd: 32,64
             os: windows-2019
           - toolset: msvc-14.3
             cxxstd: "14,17,20,latest"
             addrmd: 32,64
             os: windows-2022
+          - toolset: clang-win
+            cxxstd: "14,17,latest"
+            addrmd: 32,64
+            os: windows-2022
           - toolset: gcc
             cxxstd: "03,11,14,17,2a"
             addrmd: 64
@@ -205,4 +209,4 @@ jobs:
         shell: cmd
         run: |
           cd ../boost-root
-          b2 -j3 libs/%LIBRARY%/test toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} address-model=${{matrix.addrmd}} variant=debug,release
+          b2 -j3 libs/%LIBRARY%/test toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} address-model=${{matrix.addrmd}} variant=debug,release embed-manifest-via=linker