diff --git a/povray_wasm/Dockerfile b/povray_wasm/Dockerfile
index db927c6..6f671e5 100644
--- a/povray_wasm/Dockerfile
+++ b/povray_wasm/Dockerfile
@@ -15,10 +15,11 @@ RUN DEBIAN_FRONTEND=noninteractive apt install -y bash \
 RUN cd /opt && git clone https://github.com/boostorg/boost.git boost
 RUN cd /opt/boost && git submodule update --init --recursive
 
-RUN cd /opt/boost && ./bootstrap.sh
+RUN cd /opt/boost && ./bootstrap.sh --with-libraries=system,date_time,filesystem,thread
 
 RUN cd /opt/boost && ./b2 -j4 toolset=emscripten \
-	cflags="-s USE_PTHREADS=1" cxxflags="-s USE_PTHREADS=1" \
+	cflags="-s USE_PTHREADS=1"\
+	cxxflags="-s USE_PTHREADS=1" \
 	--prefix=/opt/libboost \
 	--build-dir=/opt/libboost_build \
 	link=static \