diff --git a/.circleci/config.yml b/.circleci/config.yml
index 15b55c5a74c..b9c3e3d8010 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -40,6 +40,11 @@ node_unit_tests: &node_unit_tests
   resource_class: large
   steps:
     - checkout
+    - run:
+        name: Pull Submodules
+        command: |
+          git submodule sync --recursive
+          git submodule update --init --recursive
     - run:
         name: Create Checksum
         command: sh .circleci/checksum.sh /tmp/checksums.txt
@@ -80,6 +85,11 @@ browsers_unit_tests: &browsers_unit_tests
   resource_class: large
   steps:
     - checkout
+    - run:
+        name: Pull Submodules
+        command: |
+          git submodule sync --recursive
+          git submodule update --init --recursive
     - run:
         name: Create Checksum
         command: sh .circleci/checksum.sh /tmp/checksums.txt