diff --git a/tools/dockerfile/distribtest/python_arch_x64/Dockerfile b/tools/dockerfile/distribtest/python_arch_x64/Dockerfile
index d8fb74d5130..9e43d00b410 100644
--- a/tools/dockerfile/distribtest/python_arch_x64/Dockerfile
+++ b/tools/dockerfile/distribtest/python_arch_x64/Dockerfile
@@ -18,4 +18,4 @@ RUN pacman --noconfirm -Syy
 RUN pacman --noconfirm -S openssl
 RUN pacman --noconfirm -S python2
 RUN pacman --noconfirm -S python2-pip
-RUN pip install virtualenv
+RUN pip2 install virtualenv
diff --git a/tools/dockerfile/distribtest/python_ubuntu1204_x64/Dockerfile b/tools/dockerfile/distribtest/python_ubuntu1204_x64/Dockerfile
index 7476d5fa099..7dd499f8a0a 100644
--- a/tools/dockerfile/distribtest/python_ubuntu1204_x64/Dockerfile
+++ b/tools/dockerfile/distribtest/python_ubuntu1204_x64/Dockerfile
@@ -16,4 +16,6 @@ FROM ubuntu:12.04
 
 RUN apt-get update -y && apt-get install -y python python-pip
 
-RUN pip install virtualenv
+# Use --index-url to workaround
+# https://stackoverflow.com/questions/21294997/pip-connection-failure-cannot-fetch-index-base-url-http-pypi-python-org-simpl
+RUN pip install --index-url=https://pypi.python.org/simple/ virtualenv
diff --git a/tools/dockerfile/distribtest/python_wheezy_x64/Dockerfile b/tools/dockerfile/distribtest/python_wheezy_x64/Dockerfile
index 0572cc1e6d7..c17d7bcba22 100644
--- a/tools/dockerfile/distribtest/python_wheezy_x64/Dockerfile
+++ b/tools/dockerfile/distribtest/python_wheezy_x64/Dockerfile
@@ -16,4 +16,6 @@ FROM debian:wheezy
 
 RUN apt-get update -y && apt-get install -y python python-pip
 
-RUN pip install virtualenv
+# Use --index-url to workaround
+# https://stackoverflow.com/questions/21294997/pip-connection-failure-cannot-fetch-index-base-url-http-pypi-python-org-simpl
+RUN pip install --index-url=https://pypi.python.org/simple/ virtualenv