diff --git a/Dockerfile b/Dockerfile
index ac3167a..5bfcb7b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ LABEL maintainer="Julien Cabillot <dockerimages@cabillot.eu>"
 # hadolint ignore=DL3008,SC3009,SC2086
 RUN export DEBIAN_FRONTEND=noninteractive && \
     export BUILD_PACKAGES=git-core && \
-    export RUNTIME_PACKAGES="python python3 bsdmainutils curl python3-six ca-certificates" && \
+    export RUNTIME_PACKAGES="python3 python-is-python3 bsdmainutils curl python3-six ca-certificates" && \
     apt-get -qq update && \
     apt-get -qq --no-install-recommends --yes install ${BUILD_PACKAGES} ${RUNTIME_PACKAGES} && \
     git clone https://github.com/jvehent/cipherscan.git && \