diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 11b940baf..abf14bac8 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -125,6 +125,7 @@ jobs:
         CC=$(brew --prefix llvm)/bin/clang \
         CXX=$(brew --prefix llvm)/bin/clang++ \
         PKG_CONFIG_PATH="$(brew --prefix openssl)/lib/pkgconfig":"$(brew --prefix)/lib/pkgconfig" \
+        MACOSX_DEPLOYMENT_TARGET="10.15" \
         cmake \
           -DCMAKE_BUILD_TYPE=$BUILD_TYPE \
           -DCREATE_BUNDLE=ON \