diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ed27388f..69b5c9ef 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -88,6 +88,8 @@ jobs:
           submodules: recursive
       - name: install dependencies
         run: HOMEBREW_NO_AUTO_UPDATE=1 brew install qt@5 libsodium libzip qrencode unbound cmake boost hidapi openssl expat libunwind-headers protobuf pkgconfig zbar
+      - name: install polyseed
+        run: git clone https://github.com/tevador/polyseed.git && cd polyseed && git reset --hard 4945d8239d6b26dc12723ca2aaa9f8110ceff5af && cmake . && make && make install
       - name: build
         run: CMAKE_PREFIX_PATH=/usr/local/opt/qt@5/ make mac-release -j3
       - name: create .tar