diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 11ebf46..d3c3cd5 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -36,6 +36,7 @@ jobs:
       if: matrix.os == 'macos-13'
       run: | 
         HOMEBREW_NO_AUTO_UPDATE=1 brew install cmake
+        HOMEBREW_NO_AUTO_UPDATE=1 brew install zlib
         wget https://ftp.gnu.org/gnu/gmp/gmp-6.3.0.tar.xz
         tar xf gmp-6.3.0.tar.xz
         cd gmp-6.3.0