diff --git a/Gemfile.lock b/Gemfile.lock
index f590e26..3cad892 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -24,13 +24,14 @@ GEM
     json (2.2.0)
     method_source (0.9.2)
     minitest (5.11.3)
-    mustermann (1.0.3)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
     pg (1.1.4)
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    rack (2.0.7)
-    rack-protection (2.0.5)
+    rack (2.2.3)
+    rack-protection (2.2.0)
       rack
     rake (12.3.2)
     require_all (2.0.0)
@@ -47,6 +48,7 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.8.0)
     rspec-support (3.8.2)
+    ruby2_keywords (0.0.5)
     shotgun (0.9.2)
       rack (>= 1.0)
     shoulda-matchers (2.8.0)
@@ -56,16 +58,16 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    sinatra (2.0.5)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.5)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
     sinatra-activerecord (2.0.13)
       activerecord (>= 3.2)
       sinatra (>= 1.0)
     thread_safe (0.3.6)
-    tilt (2.0.9)
+    tilt (2.0.10)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)