diff --git a/Gemfile.lock b/Gemfile.lock
index 6278826..a888152 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -19,8 +19,8 @@ GEM
     nokogiri (1.10.7)
       mini_portile2 (~> 2.4.0)
     public_suffix (4.0.3)
-    rack (2.0.8)
-    rack-protection (2.0.8.1)
+    rack (2.2.3)
+    rack-protection (2.2.0)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -38,11 +38,11 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.9.0)
     rspec-support (3.9.2)
-    ruby2_keywords (0.0.1)
-    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)
     tilt (2.0.10)
     xpath (3.2.0)