diff --git a/Gemfile b/Gemfile
index a6cfe07..f573bb5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ source "https://rubygems.org"
 
 git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
 
-gem "sinatra", "2.0.1"
+gem "sinatra", "2.2.0"
 gem "puma", "4.2.1" 
 gem 'puma-metrics'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index ccc5069..122b46d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,8 +11,8 @@ GEM
     puma-metrics (1.1.0)
       prometheus-client (~> 0.10)
       puma (>= 3.0)
-    rack (2.2.2)
-    rack-protection (2.0.1)
+    rack (2.2.3)
+    rack-protection (2.2.0)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -30,11 +30,11 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.9.0)
     rspec-support (3.9.2)
-    ruby2_keywords (0.0.2)
-    sinatra (2.0.1)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.1)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
     tilt (2.0.10)
 
@@ -47,7 +47,7 @@ DEPENDENCIES
   rack-test
   rake
   rspec
-  sinatra (= 2.0.1)
+  sinatra (= 2.2.0)
 
 BUNDLED WITH
    2.1.4