diff --git a/Gemfile.lock b/Gemfile.lock
index da992f5..367ec44 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -97,7 +97,9 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
@@ -112,7 +114,8 @@ GEM
       railties (>= 3.0)
     msgpack (1.2.6)
     mustache (1.1.0)
-    mustermann (1.0.3)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
     nio4r (2.3.1)
     nokogiri (1.10.1)
       mini_portile2 (~> 2.4.0)
@@ -121,11 +124,11 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     puma (3.12.0)
-    rack (2.0.6)
+    rack (2.2.3)
     rack-defense (0.2.6)
       rack (>= 1.6.11)
       redis (~> 4)
-    rack-protection (2.0.5)
+    rack-protection (2.2.0)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -187,14 +190,15 @@ GEM
       activesupport (>= 3.0.0)
       mustache (~> 1.0, >= 0.99.4)
       rspec (~> 3.0)
+    ruby2_keywords (0.0.5)
     ruby_dep (1.5.0)
     shoulda-matchers (3.1.2)
       activesupport (>= 4.0.0)
     simple_command (0.0.9)
-    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)
     spring (2.0.2)
       activesupport (>= 4.2)
@@ -211,7 +215,7 @@ GEM
     temple (0.8.0)
     thor (0.20.3)
     thread_safe (0.3.6)
-    tilt (2.0.9)
+    tilt (2.0.10)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
     websocket-driver (0.7.0)