diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..9ff841a
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,33 @@
+name: CI
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  rspec:
+    name: Unit tests
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - { ruby_version: 2.4 }
+          - { ruby_version: 2.5 }
+          - { ruby_version: 2.4 }
+          - { ruby_version: 2.7 }
+          - { ruby_version: 3.0 }
+          - { ruby_version: jruby }
+    steps:
+      - uses: actions/checkout@v1
+
+      - name: Set up Ruby ${{ matrix.ruby_version }}
+        uses: ruby/setup-ruby@v1
+        with:
+          bundler: 2
+          ruby-version: ${{ matrix.ruby_version }}
+
+      - name: Run specs
+        run: |
+          bundle install --jobs 4 --retry 3 --no-cache --frozen
+          bundle exec rspec
diff --git a/Gemfile.lock b/Gemfile.lock
index f8e4117..326ddb9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,8 +7,6 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    byebug (11.1.3)
-    coderay (1.1.3)
     concurrent-ruby (1.1.8)
     diff-lcs (1.4.4)
     faraday (1.3.0)
@@ -16,14 +14,7 @@ GEM
       multipart-post (>= 1.2, < 3)
       ruby2_keywords
     faraday-net_http (1.0.1)
-    method_source (1.0.0)
     multipart-post (2.1.1)
-    pry (0.13.1)
-      coderay (~> 1.1)
-      method_source (~> 1.0)
-    pry-byebug (3.9.0)
-      byebug (~> 11.0)
-      pry (~> 0.13.0)
     rack (2.2.3)
     rake (10.5.0)
     rspec (3.10.0)
@@ -53,7 +44,6 @@ PLATFORMS
 
 DEPENDENCIES
   bundler (>= 1.17)
-  pry-byebug
   rack
   rake (~> 10.0)
   rspec (~> 3.0)
diff --git a/sentry-sanitizer.gemspec b/sentry-sanitizer.gemspec
index aef24cb..93a24c4 100644
--- a/sentry-sanitizer.gemspec
+++ b/sentry-sanitizer.gemspec
@@ -31,7 +31,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rake', '~> 10.0'
   spec.add_development_dependency 'rspec', '~> 3.0'
   spec.add_development_dependency 'rack'
-  spec.add_development_dependency 'pry-byebug'
 
   spec.add_runtime_dependency 'sentry-ruby', '~> 4.2.0'
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 6ecf1e4..1ca4737 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,6 +1,5 @@
 require 'bundler/setup'
 require 'sentry/sanitizer'
-require 'pry-byebug'
 
 RSpec.configure do |config|
   # Enable flags like --only-failures and --next-failure