diff --git a/Gemfile.lock b/Gemfile.lock
index b0343e7..acf5b56 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -112,7 +112,7 @@ GEM
     public_suffix (4.0.6)
     raabro (1.4.0)
     rack (2.2.3)
-    rack-protection (2.1.0)
+    rack-protection (2.2.0)
       rack
     rake (13.0.6)
     rest-client (1.8.0)
@@ -130,16 +130,16 @@ GEM
       jwt (>= 1.5, < 3.0)
       multi_json (~> 1.10)
     simple_oauth (0.3.1)
-    sinatra (2.1.0)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
       rack (~> 2.2)
-      rack-protection (= 2.1.0)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
-    sinatra-contrib (2.1.0)
+    sinatra-contrib (2.2.0)
       multi_json
       mustermann (~> 1.0)
-      rack-protection (= 2.1.0)
-      sinatra (= 2.1.0)
+      rack-protection (= 2.2.0)
+      sinatra (= 2.2.0)
       tilt (~> 2.0)
     smashing (1.3.5)
       coffee-script (~> 2.4)