diff --git a/Gemfile.lock b/Gemfile.lock
index 4de4923c6..dc2512212 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -400,7 +400,7 @@ GEM
     pg (1.1.4)
     pghero (2.2.0)
       activerecord
-    pkg-config (1.3.5)
+    pkg-config (1.3.6)
     powerpack (0.1.2)
     premailer (1.11.1)
       addressable