diff --git a/Gemfile.lock b/Gemfile.lock
index cd41eb7..633ec7c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -36,18 +36,18 @@ GEM
     puma (4.3.5)
       nio4r (~> 2.0)
     rack (2.2.3)
-    rack-protection (2.0.8.1)
+    rack-protection (2.2.0)
       rack
     rack-ssl (1.4.1)
       rack
-    ruby2_keywords (0.0.2)
+    ruby2_keywords (0.0.5)
     sassc (2.2.1)
       ffi (~> 1.9)
     sequel (5.29.0)
-    sinatra (2.0.8.1)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.8.1)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
     sinatra-sequel (0.9.0)
       sequel (>= 3.2.0)