diff --git a/Gemfile b/Gemfile
index c183330..490dbe1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ gem 'rake', '~> 12.0'
 gem 'rack-ssl', '~> 1.4.1'
 
 # Gems for web
-gem 'sinatra', '~> 2.0', require: 'sinatra/base'
+gem 'sinatra', '~> 2.2', require: 'sinatra/base'
 gem 'sinatra-contrib'
 gem 'rack-cors', '~> 1.0', require: 'rack/cors'
 gem 'puma'
diff --git a/Gemfile.lock b/Gemfile.lock
index 3bc0ef5..22ff9d2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,14 +1,14 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    backports (3.15.0)
     clap (1.0.0)
     connection_pool (2.2.2)
     cutest (1.2.3)
       clap
     hiredis (0.6.3)
     multi_json (1.14.1)
-    mustermann (1.0.3)
+    mustermann (2.0.2)
+      ruby2_keywords (~> 0.0.1)
     nest (3.1.2)
       redic
     nio4r (2.5.2)
@@ -19,10 +19,10 @@ GEM
     pg (1.1.4)
     puma (4.3.3)
       nio4r (~> 2.0)
-    rack (2.2.2)
+    rack (2.2.4)
     rack-cors (1.0.5)
       rack (>= 1.6.0)
-    rack-protection (2.0.7)
+    rack-protection (2.2.3)
       rack
     rack-ssl (1.4.1)
       rack
@@ -32,27 +32,27 @@ GEM
     redic (1.5.3)
       hiredis
     redis (4.1.3)
+    ruby2_keywords (0.0.5)
     sequel (5.25.0)
     sidekiq (6.0.2)
       connection_pool (>= 2.2.2)
       rack (>= 2.0.0)
       rack-protection (>= 2.0.0)
       redis (>= 4.1.0)
-    sinatra (2.0.7)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.7)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
-    sinatra-contrib (2.0.7)
-      backports (>= 2.8.2)
+    sinatra-contrib (2.2.3)
       multi_json
-      mustermann (~> 1.0)
-      rack-protection (= 2.0.7)
-      sinatra (= 2.0.7)
+      mustermann (~> 2.0)
+      rack-protection (= 2.2.3)
+      sinatra (= 2.2.3)
       tilt (~> 2.0)
     stal (0.3.0)
       redic (~> 1.5)
-    tilt (2.0.10)
+    tilt (2.0.11)
     yajl-ruby (1.4.1)
     yard (0.9.20)
 
@@ -70,7 +70,7 @@ DEPENDENCIES
   rake (~> 12.0)
   sequel (~> 5.0)
   sidekiq (~> 6.0)
-  sinatra (~> 2.0)
+  sinatra (~> 2.2)
   sinatra-contrib
   yajl-ruby
   yard (~> 0.9.20)