diff --git a/.circleci/config.yml b/.circleci/config.yml
index 68653d25..bc3add8b 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -13,5 +13,9 @@ jobs:
       - image: circleci/postgres:9.6.5-alpine-ram
     steps:
       - checkout
+      - run:
+          name: "Clone Submodules"
+          command: |
+            git submodule update --init --recursive
       - run: ./script/setup
       - run: ./script/cibuild