diff --git a/.circleci/config.yml b/.circleci/config.yml
index b3bbd2641..40aa62686 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -41,7 +41,7 @@ jobs:
       - checkout
       - restore_cache:
           name: Restore Boost build
-          key: &boost-cache-key emscripten-boost-{{ checksum "scripts/travis-emscripten/install_deps.sh" }}{{ checksum "scripts/travis-emscripten/build_emscripten.sh" }}
+          key: &boost-cache-key emscripten-boost-{{ checksum "scripts/travis-emscripten/install_deps.sh" }}{{ checksum "scripts/build_emscripten.sh" }}{{ checksum "scripts/travis-emscripten/build_emscripten.sh" }}
       - run:
           name: Bootstrap Boost
           command: |