diff --git a/Gemfile b/Gemfile
index 5540ad5..aeafb73 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
 
 gem "pry", "~> 0.12.2"
 gem "activerecord", "~> 5.2"
-gem "sinatra", "~> 2.0"
+gem "sinatra", "~> 2.2"
 gem "sinatra-activerecord", "~> 2.0"
 gem "require_all", "~> 2.0"
 gem "sqlite3", "~> 1.4"
diff --git a/Gemfile.lock b/Gemfile.lock
index 03ecee4..2fc83f3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -20,25 +20,27 @@ GEM
       concurrent-ruby (~> 1.0)
     method_source (0.9.2)
     minitest (5.11.3)
-    mustermann (1.0.3)
+    mustermann (2.0.2)
+      ruby2_keywords (~> 0.0.1)
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    rack (2.0.7)
-    rack-protection (2.0.5)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     require_all (2.0.0)
-    sinatra (2.0.5)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.5)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
     sinatra-activerecord (2.0.13)
       activerecord (>= 3.2)
       sinatra (>= 1.0)
     sqlite3 (1.4.1)
     thread_safe (0.3.6)
-    tilt (2.0.9)
+    tilt (2.0.11)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
 
@@ -50,7 +52,7 @@ DEPENDENCIES
   colorize (~> 0.8.1)
   pry (~> 0.12.2)
   require_all (~> 2.0)
-  sinatra (~> 2.0)
+  sinatra (~> 2.2)
   sinatra-activerecord (~> 2.0)
   sqlite3 (~> 1.4)