diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 02fe6eb..1fa5d59 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -113,7 +113,7 @@ jobs:
             install: clang-14
           - toolset: clang
             cxxstd: "03,11,14,17,2a"
-            os: macos-10.15
+            os: macos-11
 
     runs-on: ${{matrix.os}}