diff --git a/Dockerfile b/Dockerfile
index 6fb4296..3386604 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,6 +8,7 @@ ENV DEBIAN_FRONTEND noninteractive
 RUN apt-get update && apt-get install -y \
 	nano \
 	git \
+	mercurial \
 	curl \
 	wget \
 	build-essential \