diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index aa9e1172..70292dd4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,9 +14,9 @@ jobs:
       fail-fast: false
       matrix:
         arch: [x64]
-        os: [macos-10.15, windows-2019, ubuntu-18.04]
+        os: [macos-11, windows-2019, ubuntu-18.04]
         include:
-          - os: macos-10.15
+          - os: macos-11
             friendlyName: macOS
           - os: windows-2019
             friendlyName: Windows