diff --git a/build.sh b/build.sh
index 2bfcd47..c713226 100644
--- a/build.sh
+++ b/build.sh
@@ -3,7 +3,7 @@ rm -rf nginquic
 curl -sSL https://raw.githubusercontent.com/minoplhy/nginquic/main/packages.sh | bash
 mkdir nginquic && cd nginquic
 hg clone -b quic https://hg.nginx.org/nginx-quic
-git clone https://github.com/google/boringssl
+git clone --depth=1 https://github.com/google/boringssl
 cd boringssl
 mkdir build && cd build && cmake .. && make
 cd .. && cd ..