diff --git a/Gemfile.lock b/Gemfile.lock
index 85a1742..d46ca4e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,7 +30,7 @@ GEM
     multi_json (1.12.1)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
-    mustermann (1.0.2)
+    mustermann (1.0.3)
     oauth2 (1.3.0)
       faraday (>= 0.8, < 0.11)
       jwt (~> 1.0)
@@ -43,7 +43,7 @@ GEM
       slop (~> 3.4)
     public_suffix (2.0.5)
     rack (2.0.5)
-    rack-protection (2.0.2)
+    rack-protection (2.0.4)
       rack
     rake (11.2.2)
     rspec (3.7.0)
@@ -60,10 +60,10 @@ GEM
       rspec-support (~> 3.7.0)
     rspec-support (3.7.0)
     safe_yaml (1.0.4)
-    sinatra (2.0.2)
+    sinatra (2.0.4)
       mustermann (~> 1.0)
       rack (~> 2.0)
-      rack-protection (= 2.0.2)
+      rack-protection (= 2.0.4)
       tilt (~> 2.0)
     slop (3.6.0)
     thread_safe (0.3.5)