diff --git a/revised/blog-before/Gemfile.lock b/revised/blog-before/Gemfile.lock
index 2dc5fe1..7c6b768 100644
--- a/revised/blog-before/Gemfile.lock
+++ b/revised/blog-before/Gemfile.lock
@@ -37,11 +37,13 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.3.3)
+    concurrent-ruby (1.1.5)
     erubis (2.7.0)
     execjs (1.4.0)
       multi_json (~> 1.0)
     hike (1.2.1)
-    i18n (0.6.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     journey (1.0.3)
     jquery-rails (2.0.2)
       railties (>= 3.2.0, < 5.0)