diff --git a/.circleci/config.yml b/.circleci/config.yml
index 21f1be785db934..2b1acf72615b13 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -3,16 +3,21 @@ defaults: &defaults
   docker:
     - image: circleci/node:9.10
 restore_repo: &restore_repo
-  restore_cache:
-    keys:
-      - v1-repo-{{ .Branch }}-{{ .Revision }}
+  # The cache logic of CircleCI has been disabled for Security reasons.
+  # We can no longer use it.
+  # restore_cache:
+  #   keys:
+  #     - v1-repo-{{ .Branch }}-{{ .Revision }}
+  - checkout
+  - run:
+      name: Install js dependencies
+      command: yarn
 version: 2
 jobs:
   checkout:
     <<: *defaults
     steps:
-      - *restore_repo
-      - checkout
+      - <: *restore_repo
       - run:
           name: Check versions and env
           command: |
@@ -41,7 +46,7 @@ jobs:
   test_unit:
     <<: *defaults
     steps:
-      - *restore_repo
+      - <: *restore_repo
       - run:
           name: Lint
           command: yarn lint
@@ -67,7 +72,7 @@ jobs:
   test_material-ui-x:
     <<: *defaults
     steps:
-      - *restore_repo
+      - <: *restore_repo
       - run:
           name: material-ui-icons
           command: |
@@ -135,7 +140,7 @@ jobs:
     docker:
       - image: circleci/node:9.10
     steps:
-      - *restore_repo
+      - <: *restore_repo
       - run:
           name: Can we generate the material-ui build?
           command: cd packages/material-ui && yarn build
@@ -148,7 +153,7 @@ jobs:
   test_browser:
     <<: *defaults
     steps:
-      - *restore_repo
+      - <: *restore_repo
       - run:
           name: Can we generate the api of the docs?
           command: yarn docs:api
@@ -168,7 +173,7 @@ jobs:
       - image: circleci/node:9.10
       - image: selenium/standalone-chrome:3.11.0
     steps:
-      - *restore_repo
+      - <: *restore_repo
       - run:
           name: Visual regression tests
           command: |