diff --git a/dependencies.yaml b/dependencies.yaml
index d91f97e4..262b1007 100644
--- a/dependencies.yaml
+++ b/dependencies.yaml
@@ -22,7 +22,7 @@ boost: 1.80.0
 # Only used for MacOS builds
 cmake: 3.24.2
 protobuf: 3.20.0
-zlib: 1.2.12
+zlib: 1.2.13
 zstd: 1.5.2
 snappy: 1.1.9
 openssl: 1.1.1q
diff --git a/pkg/mac/build-dependencies.sh b/pkg/mac/build-dependencies.sh
index 35f8685d..3e409bfd 100755
--- a/pkg/mac/build-dependencies.sh
+++ b/pkg/mac/build-dependencies.sh
@@ -50,7 +50,7 @@ PREFIX=$CACHE_DIR/install
 ###############################################################################
 if [ ! -f zlib-${ZLIB_VERSION}/.done ]; then
     echo "Building ZLib"
-    curl -O -L https://zlib.net/zlib-${ZLIB_VERSION}.tar.gz
+    curl -O -L https://zlib.net/fossils/zlib-${ZLIB_VERSION}.tar.gz
     tar xfz zlib-$ZLIB_VERSION.tar.gz
     pushd zlib-$ZLIB_VERSION
       CFLAGS="-fPIC -O3 -arch arm64 -arch x86_64 -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET}" ./configure --prefix=$PREFIX