diff --git a/Gemfile.lock b/Gemfile.lock
index 2e0aee4..8502f5e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -17,8 +17,8 @@ GEM
     parser (2.7.0.2)
       ast (~> 2.4.0)
     public_suffix (4.0.3)
-    rack (2.1.2)
-    rack-protection (2.0.8.1)
+    rack (2.2.3)
+    rack-protection (2.2.0)
       rack
     rainbow (3.0.0)
     rspec (3.9.0)
@@ -42,11 +42,11 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 1.7)
     ruby-progressbar (1.10.1)
-    ruby2_keywords (0.0.2)
-    sinatra (2.0.8.1)
+    ruby2_keywords (0.0.5)
+    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)
     thin (1.7.2)
       daemons (~> 1.0, >= 1.0.9)