diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index de3a19e76..3c070aede 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -746,7 +746,7 @@ jobs:
 
   build-freebsd:
     name: Build FreeBSD
-    runs-on: macos-10.15
+    runs-on: macos-11
     steps:
     - name: Checkout
       uses: actions/checkout@v3
@@ -912,7 +912,7 @@ jobs:
 
   build-macos-macports:
     name: Build macOS Macports
-    runs-on: macos-10.15
+    runs-on: macos-11
     steps:
       - name: Install macports
         run: |