diff --git a/Gemfile b/Gemfile
index 3114d7c..b388b2c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 
 gem 'rake'
-gem 'sinatra', '~> 2.0.2'
+gem 'sinatra', '~> 2.2.0'
 gem 'yajl-ruby'
 
 gem 'rack-cors', '~> 1.0.5'
diff --git a/Gemfile.lock b/Gemfile.lock
index c4ca8f4..f5430c3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -29,19 +29,19 @@ GEM
     rack (2.2.3)
     rack-cors (1.0.6)
       rack (>= 1.6.0)
-    rack-protection (2.0.8.1)
+    rack-protection (2.2.0)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rake (13.0.1)
-    ruby2_keywords (0.0.2)
+    ruby2_keywords (0.0.5)
     ruby_parser (3.14.2)
       sexp_processor (~> 4.9)
     sexp_processor (4.15.0)
-    sinatra (2.0.8.1)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.8.1)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
     sqlite3 (1.4.2)
     sys-uname (1.2.1)
@@ -65,7 +65,7 @@ DEPENDENCIES
   rack-cors (~> 1.0.5)
   rack-test
   rake
-  sinatra (~> 2.0.2)
+  sinatra (~> 2.2.0)
   yajl-ruby
 
 BUNDLED WITH