diff --git a/.circleci/config.yml b/.circleci/config.yml
new file mode 100644
index 0000000..8ffa5ab
--- /dev/null
+++ b/.circleci/config.yml
@@ -0,0 +1,42 @@
+---
+version: 2
+
+references:
+  steps: &steps
+    - checkout
+
+    - type: cache-restore
+      key: prometheus-client-tracer-bundler-{{ checksum "prometheus-client-tracer.gemspec" }}
+
+    - run: gem install bundler -v 2.0.1
+    - run: bundle install --path vendor/bundle
+
+    - type: cache-save
+      key: prometheus-client-tracer-bundler-{{ checksum "prometheus-client-tracer.gemspec" }}
+      paths:
+        - vendor/bundle
+
+    - run: bundle exec rubocop
+    - run: bundle exec rspec
+
+jobs:
+  build-ruby24:
+    docker:
+      - image: ruby:2.4
+    steps: *steps
+  build-ruby25:
+    docker:
+      - image: ruby:2.5
+    steps: *steps
+  build-ruby26:
+    docker:
+      - image: ruby:2.6
+    steps: *steps
+
+workflows:
+  version: 2
+  tests:
+    jobs:
+      - build-ruby24
+      - build-ruby25
+      - build-ruby26