diff --git a/.circleci/config.yml b/.circleci/config.yml
index 09ad00dc..f67fe0d5 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -14,7 +14,11 @@ jobs:
           command: echo 'export PATH="${HOME}/.local/bin:${PATH}"' >> ${BASH_ENV}
       - run:
           name: Install python3-devel
-          command: sudo apt-get install python3-dev libssl-dev python-openssl
+          command: |
+            sudo apt-get update
+            sudo apt-get install -y make build-essential libssl-dev zlib1g-dev libbz2-dev \
+            libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev \
+            xz-utils tk-dev libffi-dev liblzma-dev python-openssl git
       - run:
           name: Install from requirements.txt
           command: pip install --user --exists-action w -r requirements.txt
diff --git a/.circleci/python-versions.txt b/.circleci/python-versions.txt
index 28333d3f..148755f7 100644
--- a/.circleci/python-versions.txt
+++ b/.circleci/python-versions.txt
@@ -1 +1 @@
-2.7.16  3.4.9  3.5.6  3.6.6
+2.7.16 3.5.7 3.6.9
diff --git a/tox.ini b/tox.ini
index 443c56ed..21384ea8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,8 +4,8 @@ addopts=--tb=short
 [tox]
 envlist =
        py27-lint,
-       {py27,py34,py35}-django18-drf{31,32,33,34},
-       {py27,py34,py35}-django111-drf{34,35,36,37},
+       {py27,py35}-django18-drf{31,32,33,34},
+       {py27,py35}-django111-drf{34,35,36,37},
        {py35}-django{20,21}-drf{37,38,39},
        {py36}-django{20,21}-drf{38,39},