diff --git a/Gemfile.lock b/Gemfile.lock
index 6aee735..c67dc82 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -178,7 +178,7 @@ GEM
       ruby-progressbar
     mocha (1.13.0)
     msgpack (1.4.5)
-    mustermann (1.1.1)
+    mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
     nenv (0.3.0)
     nio4r (2.5.8)
@@ -205,14 +205,14 @@ GEM
     puma (5.6.4)
       nio4r (~> 2.0)
     racc (1.6.0)
-    rack (2.2.3)
+    rack (2.2.4)
     rack-cas (0.16.1)
       addressable (~> 2.3)
       nokogiri (~> 1.5)
       rack (>= 1.3)
     rack-mini-profiler (2.3.4)
       rack (>= 1.2.0)
-    rack-protection (2.2.0)
+    rack-protection (3.0.4)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -307,10 +307,10 @@ GEM
     simplecov-rcov (0.2.3)
       simplecov (>= 0.4.1)
     simplecov_json_formatter (0.1.4)
-    sinatra (2.2.0)
-      mustermann (~> 1.0)
-      rack (~> 2.2)
-      rack-protection (= 2.2.0)
+    sinatra (3.0.4)
+      mustermann (~> 3.0)
+      rack (~> 2.2, >= 2.2.4)
+      rack-protection (= 3.0.4)
       tilt (~> 2.0)
     sixarm_ruby_unaccent (1.2.0)
     sort_alphabetical (1.1.0)
@@ -329,7 +329,7 @@ GEM
     sqlite3 (1.4.2)
     terminal-notifier-guard (1.7.0)
     thor (1.2.1)
-    tilt (2.0.10)
+    tilt (2.0.11)
     ttfunk (1.7.0)
     turbolinks (5.2.1)
       turbolinks-source (~> 5.2)