diff --git a/Gemfile.lock b/Gemfile.lock
index 2e04a34..5a3f528 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,7 +30,7 @@ GEM
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
-    rack-protection (2.0.8.1)
+    rack-protection (2.2.0)
       rack
     rake (13.0.1)
     rb-fsevent (0.10.3)
@@ -38,11 +38,11 @@ GEM
       ffi (~> 1.0)
     rerun (0.13.0)
       listen (~> 3.0)
-    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)