diff --git a/.circleci/config.yml b/.circleci/config.yml
index 44f9d33..e40f657 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -16,7 +16,8 @@ jobs:
           name: Install dependencies
           command: |
             set -e
-            sudo pip install pipenv
+            pyenv global 3.5.2
+            pip3 install pipenv
             pipenv install --dev --skip-lock
             pipenv run pip freeze
       - save_cache:
@@ -34,6 +35,7 @@ jobs:
       - run:
           name: Check for known CVEs
           command: pipenv check
+
   test-against-latest-api:
     working_directory: ~/project
     machine:
@@ -45,7 +47,8 @@ jobs:
       - run:
           name: Install dependencies
           command: |
-            sudo pip install pipenv
+            pyenv global 3.5.2
+            pip3 install pipenv
             pipenv install --dev --skip-lock
             pipenv run pip freeze
       - run:
@@ -56,7 +59,7 @@ jobs:
           command: |
             cd securedrop
             NUM_SOURCES=5 make -C securedrop dev
-          background: true  
+          background: true
       - run:  # As suggested in https://discuss.circleci.com/t/prevent-race-conditions-by-waiting-for-services-with-dockerize/11215
           name: Install dockerize
           command: |