diff --git a/.circleci/config.yml b/.circleci/config.yml
index 8c843dd62d04..35c91ec5d470 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -117,9 +117,12 @@ jobs:
       - android/save-gradle-cache
   strings-check:
     docker:
-      - image: circleci/ruby:2.3
+      - image: circleci/ruby:2.5.5
     steps:
       - git/shallow-checkout
+      - run:
+          name: Install bundler
+          command: gem install bundler --version 2.0.2 
       - bundle-install/bundle-install:
           cache_key_prefix: strings-check
       - run:
diff --git a/.ruby-version b/.ruby-version
index 276cbf9e2858..0cadbc1e33b2 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.3.0
+2.5.5
diff --git a/Gemfile.lock b/Gemfile.lock
index f11672fd57e0..e84832d2b7bf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -199,4 +199,4 @@ DEPENDENCIES
   rmagick (~> 3.2.0)
 
 BUNDLED WITH
-   1.17.3
+   2.0.2