diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8b9d841..95f9119 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -476,7 +476,7 @@ jobs:
 
           - lib: filesystem
             bopts: toolset=clang-win install
-            copts: "-G \"Visual Studio 17 2022\" -T clangcl -DBoost_COMPILER=clangw14"
+            copts: "-G \"Visual Studio 17 2022\" -T clangcl -DBoost_COMPILER=\"clangw14;clangw15\""
             os: windows-2022
 
           # other libraries