diff --git a/docker/Dockerfile b/docker/Dockerfile
index 8fbce9c..a0fc560 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -3,7 +3,7 @@
 RUN /usr/local/bin/clean-install \
         git g++ make binutils autoconf automake autotools-dev libtool \
 	pkg-config libev-dev libjemalloc-dev \
-        libev4 libjemalloc1 ca-certificates && \
+        libev4 libjemalloc1 ca-certificates mime-support && \
     git clone --depth 1 -b openssl-quic-draft-22 https://github.com/tatsuhiro-t/openssl && \
     cd openssl && ./config enable-tls1_3 --openssldir=/etc/ssl && make -j$(nproc) && make install_sw && cd .. && rm -rf openssl && \
     git clone --depth 1 https://github.com/ngtcp2/nghttp3 && \