diff --git a/apps/sinatra/Gemfile.lock b/apps/sinatra/Gemfile.lock
index 7ce9884..6166d26 100644
--- a/apps/sinatra/Gemfile.lock
+++ b/apps/sinatra/Gemfile.lock
@@ -1,14 +1,18 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    rack (1.6.5)
-    rack-protection (1.5.3)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
+    rack (2.2.3.1)
+    rack-protection (2.2.0)
       rack
-    sinatra (1.4.7)
-      rack (~> 1.5)
-      rack-protection (~> 1.4)
-      tilt (>= 1.3, < 3)
-    tilt (2.0.5)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.0)
+      mustermann (~> 1.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
+      tilt (~> 2.0)
+    tilt (2.0.10)
 
 PLATFORMS
   ruby