diff --git a/Gemfile.lock b/Gemfile.lock
index fffcaa4..a683a25 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,13 +6,13 @@ GEM
     mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     rack (2.2.4)
-    rack-protection (2.2.2)
+    rack-protection (2.2.3)
       rack
     ruby2_keywords (0.0.5)
-    sinatra (2.2.2)
+    sinatra (2.2.3)
       mustermann (~> 2.0)
       rack (~> 2.2)
-      rack-protection (= 2.2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
     thin (1.8.1)
       daemons (~> 1.0, >= 1.0.9)