diff --git a/.circleci/config.yml b/.circleci/config.yml
index b148a8f..b21cb27 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -3,11 +3,11 @@ workflows:
   version: 2
   test:
     jobs:
-      - test-python-3.5
       - test-python-3.6
       - test-python-3.7
+      - test-python-3.8
 jobs:
-  test-python-3.5: &build-template
+  test-python-3.6: &build-template
     working_directory: ~/SunPower/pvfactors
     parallelism: 1
     shell: /bin/bash --login
@@ -15,7 +15,7 @@ jobs:
       CIRCLE_ARTIFACTS: /tmp/circleci-artifacts
       CIRCLE_TEST_REPORTS: /tmp/circleci-test-results
     docker:
-      - image: circleci/python:3.5.7-stretch
+      - image: circleci/python:3.6.6-stretch
     steps:
       - checkout
       - run: mkdir -p $CIRCLE_ARTIFACTS $CIRCLE_TEST_REPORTS
@@ -48,11 +48,11 @@ jobs:
       - store_artifacts:
           path: build/sphinx/html
           destination: docs
-  test-python-3.6:
-    <<: *build-template
-    docker:
-      - image: circleci/python:3.6.6-stretch
   test-python-3.7:
     <<: *build-template
     docker:
       - image: circleci/python:3.7.3-stretch
+  test-python-3.8:
+    <<: *build-template
+    docker:
+      - image: circleci/python:3.8.5-stretch