diff --git a/build/Dockerfile.osx b/build/Dockerfile.osx
index a695331..9178813 100644
--- a/build/Dockerfile.osx
+++ b/build/Dockerfile.osx
@@ -21,7 +21,7 @@ RUN git clone https://github.com/tpoechtrager/osxcross \
     && mv MacOSX11.3.sdk.tar.xz tarballs/ \
     && UNATTENDED=yes OSX_VERSION_MIN=10.10 ./build.sh \
     # install gmp
-    && echo "1" | MACOSX_DEPLOYMENT_TARGET=11.3 ./tools/osxcross-macports install gmp \
+    && echo "2" | MACOSX_DEPLOYMENT_TARGET=11.3 ./tools/osxcross-macports install gmp \
     # cleanups before Docker layer is finalized
     && rm -r tarballs/
 RUN chmod +rx /opt/osxcross