diff --git a/docker/Dockerfile b/docker/Dockerfile
index 89db556e72..8d8673f097 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -53,6 +53,7 @@ RUN apt-get -q update \
      python3-minimal \
      python3-git \
      python3-semantic-version \
+     python3-websocket \
  && apt-get clean \
  && rm -rf /var/lib/apt/lists/*