diff --git a/.github/workflows/build-macosx.yml b/.github/workflows/build-macosx.yml
index 28c7bcb..3717bad 100644
--- a/.github/workflows/build-macosx.yml
+++ b/.github/workflows/build-macosx.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   amd64:
-    runs-on: macos-11
+    runs-on: macos-10.15
     steps:
       - uses: actions/checkout@v1
       -
@@ -27,7 +27,7 @@ jobs:
           name: macosx-amd64.tar.gz
           path: out/binary_distrib.tar.gz
   arm64:
-    runs-on: macos-11
+    runs-on: macos-10.15
     steps:
       - uses: actions/checkout@v1
       -