diff --git a/Dockerfile b/Dockerfile
index 3c4d915..43fc83f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,7 +9,7 @@ RUN apt-get update
 
 RUN apt-get -y install git python3.7 python3-pip librocksdb-dev libsnappy-dev libbz2-dev libz-dev liblz4-dev
 
-RUN pip3 install aiohttp pylru python-rocksdb
+RUN pip3 install multidict aiohttp pylru python-rocksdb
 
 RUN git clone -b $VERSION https://github.com/spesmilo/electrumx.git