diff --git a/ruby-sinatra/Gemfile.lock b/ruby-sinatra/Gemfile.lock
index 64700d4..de5700f 100644
--- a/ruby-sinatra/Gemfile.lock
+++ b/ruby-sinatra/Gemfile.lock
@@ -5,7 +5,7 @@ GEM
       timers (~> 4.0.0)
     daemons (1.1.9)
     eventmachine (1.0.3)
-    ffi (1.9.4)
+    ffi (1.15.5)
     haml (4.0.5)
       tilt
     hitimes (1.2.2)
@@ -15,23 +15,27 @@ GEM
       celluloid (>= 0.15.2)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
-    rack (1.5.2)
-    rack-protection (1.5.3)
+    mustermann (2.0.2)
+      ruby2_keywords (~> 0.0.1)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     rb-fsevent (0.9.4)
     rb-inotify (0.9.5)
       ffi (>= 0.5.0)
     rerun (0.10.0)
       listen (~> 2.7, >= 2.7.3)
-    sinatra (1.4.5)
-      rack (~> 1.4)
-      rack-protection (~> 1.4)
-      tilt (~> 1.3, >= 1.3.4)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
+      tilt (~> 2.0)
     thin (1.6.2)
       daemons (>= 1.0.9)
       eventmachine (>= 1.0.0)
       rack (>= 1.0.0)
-    tilt (1.4.1)
+    tilt (2.0.11)
     timers (4.0.1)
       hitimes