diff --git a/Dockerfile b/Dockerfile
index ab1a45e..0e997fd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -34,6 +34,7 @@ RUN apt-get update \
          gpg gpg-agent \
          python-passlib python3-passlib \
          mercurial libcap2-bin build-essential \
+         python3 python3.7-minimal \
     && apt-get autoremove -y \
     && rm -rf /var/lib/apt/lists/* \
     && rm -rf /var/cache/*