diff --git a/Gemfile b/Gemfile
index 8d95d1a..1456471 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
-gem 'sinatra'
+gem 'sinatra', '>= 2.2.0'
 gem 'httparty'
 gem 'shopify_api'
 gem 'dotenv'
diff --git a/Gemfile.lock b/Gemfile.lock
index 9614ebc..2cd48a7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -29,16 +29,16 @@ GEM
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
     rack (2.2.3)
-    rack-protection (2.0.2)
+    rack-protection (2.2.0)
       rack
-    ruby2_keywords (0.0.2)
+    ruby2_keywords (0.0.5)
     shopify_api (4.9.0)
       activeresource (>= 3.0.0)
       rack
-    sinatra (2.0.2)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.2)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
     tilt (2.0.10)
     tzinfo (2.0.4)
@@ -52,7 +52,7 @@ DEPENDENCIES
   dotenv
   httparty
   shopify_api
-  sinatra
+  sinatra (>= 2.2.0)
 
 BUNDLED WITH
-   2.1.2
+   2.1.4