diff --git a/Gemfile.lock b/Gemfile.lock
index 18a27bf..e11fc38 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,8 +30,8 @@ GEM
       builder (>= 2.1.2)
       i18n (>= 0.4.0)
       multi_json (~> 1.0)
-    sinatra (1.4.2)
-      rack (~> 1.5, >= 1.5.2)
+    sinatra (1.4.3)
+      rack (~> 1.4)
       rack-protection (~> 1.4)
       tilt (~> 1.3, >= 1.3.4)
     sinatra-contrib (1.4.0)
@@ -41,7 +41,7 @@ GEM
       rack-test
       sinatra (~> 1.4.2)
       tilt (~> 1.3)
-    tilt (1.3.7)
+    tilt (1.4.1)
     unicorn (4.3.1)
       kgio (~> 2.6)
       rack