diff --git a/docker/top/Dockerfile b/docker/top/Dockerfile
index 944f42f..eb0dd29 100644
--- a/docker/top/Dockerfile
+++ b/docker/top/Dockerfile
@@ -14,6 +14,7 @@ RUN apt-get update && apt-get install -y \
     chromium-browser \
     fuse \
     libfuse2 \
+    thunderbird \
     && rm -rf /var/lib/apt/lists/* && \
     mkdir -p /root/.ssh/ && \
     chmod 600 /root/.ssh