diff --git a/python3/Dockerfile b/python3/Dockerfile
index 2371748ac6980a35f6293aabad6926fd4a74bc38..cf98521fed27521296a598163fdbf078edfd35c0 100644
--- a/python3/Dockerfile
+++ b/python3/Dockerfile
@@ -8,8 +8,8 @@ FROM ubuntu:16.04
 MAINTAINER xt
 
 COPY sources.list /etc/apt/sources.list
-COPY python-3.7.0.tar.xz ./python.tar.xz
-COPY python-3.7.0.tar.xz.asc ./python.tar.xz.asc
+COPY Python-3.6.7.tar.xz ./python.tar.xz
+COPY Python-3.6.7.tar.xz.asc ./python.tar.xz.asc
 COPY get-pip.py ./get-pip.py
 
 # ensure local python is preferred over distribution python
@@ -30,7 +30,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 	&& rm -rf /var/lib/apt/lists/*
 
 ENV GPG_KEY 0D96DF4D4110E5C43FBFB17F2D347EA6AA65421D
-ENV PYTHON_VERSION 3.7.0
+ENV PYTHON_VERSION 3.6.7
 
 RUN set -ex \
 	\
diff --git a/python3/python-3.7.0.tar.xz b/python3/Python-3.6.7.tar.xz
similarity index 65%
rename from python3/python-3.7.0.tar.xz
rename to python3/Python-3.6.7.tar.xz
index 9aa32fcfd64259e514185d0053f683d3d68ec566..3ba20e003840c98fa85731e4c7621b4168a3b17f 100644
Binary files a/python3/python-3.7.0.tar.xz and b/python3/Python-3.6.7.tar.xz differ
diff --git a/python3/Python-3.6.7.tar.xz.asc b/python3/Python-3.6.7.tar.xz.asc
new file mode 100644
index 0000000000000000000000000000000000000000..2387b3dd7ad151f21af6eddaa0815d6666aeedab
--- /dev/null
+++ b/python3/Python-3.6.7.tar.xz.asc
@@ -0,0 +1,16 @@
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diff --git a/python3/python-3.7.0.tar.xz.asc b/python3/python-3.7.0.tar.xz.asc
deleted file mode 100644
index 9df59d14457550bbfbe93b26ed8f5197e24ff8cf..0000000000000000000000000000000000000000
--- a/python3/python-3.7.0.tar.xz.asc
+++ /dev/null
@@ -1,16 +0,0 @@
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