diff --git a/.circleci/config.yml b/.circleci/config.yml
index 42f95f41..0a62c7c9 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -86,8 +86,14 @@ workflows:
   version: 2.1
   build_and_test_docker:
     jobs:
+      - approve:
+          type: approval
       - build:
+          requires:
+            - approve
           matrix:
             parameters:
               postgresql_image: [ "circleci/postgres:10-alpine-ram", "cimg/postgres:12.15", "cimg/postgres:13.11" ]
-      - docker-build
+      - docker-build:
+          requires:
+            - approve
diff --git a/Gemfile.lock b/Gemfile.lock
index 1f96b437..1bbc67f8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -241,7 +241,7 @@ GEM
       que (>= 1)
       sinatra
     racc (1.7.3)
-    rack (2.2.8.1)
+    rack (2.2.23)
     rack-protection (2.2.3)
       rack
     rack-test (2.1.0)