diff --git a/Gemfile.lock b/Gemfile.lock
index 43e250f..e726091 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,7 +9,8 @@ GEM
     coderay (1.1.2)
     diff-lcs (1.3)
     method_source (0.9.0)
-    mustermann (1.0.2)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
     parallel (1.12.1)
     parser (2.5.0.3)
       ast (~> 2.4.0)
@@ -20,8 +21,8 @@ GEM
     pry-byebug (3.5.0)
       byebug (~> 9.1)
       pry (~> 0.10)
-    rack (2.0.5)
-    rack-protection (2.0.3)
+    rack (2.2.3)
+    rack-protection (2.2.0)
       rack
     rack-test (0.8.3)
       rack (>= 1.0, < 3)
@@ -47,13 +48,14 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.0, >= 1.0.1)
     ruby-progressbar (1.9.0)
-    sinatra (2.0.3)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.3)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
     thor (0.20.0)
-    tilt (2.0.8)
+    tilt (2.0.10)
     unicode-display_width (1.3.0)
 
 PLATFORMS