diff --git a/povray_wasm/Dockerfile b/povray_wasm/Dockerfile
index 5b14e33..a93832b 100644
--- a/povray_wasm/Dockerfile
+++ b/povray_wasm/Dockerfile
@@ -18,7 +18,7 @@ RUN DEBIAN_FRONTEND=noninteractive apt install -y \
 
 WORKDIR /usr/src/
 
-RUN cd /usr/src/ && git clone --recurse-submodules https://github.com/emscripten-ports/boost.git emscripten-boost
+RUN cd /usr/src/ && git clone --recursive git@github.com:emscripten-ports/boost.git emscripten-boost
 
 ENV POVRAY_VERSION=3.7-stable
 RUN cd /usr/src/ && git clone --depth 1 --branch $POVRAY_VERSION https://github.com/POV-Ray/povray povray
\ No newline at end of file