diff --git a/Gemfile.lock b/Gemfile.lock
index b9257f507..73ff072ad 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -417,7 +417,7 @@ GEM
     pg (1.2.2)
     pghero (2.4.1)
       activerecord (>= 5)
-    pkg-config (1.4.0)
+    pkg-config (1.4.1)
     premailer (1.11.1)
       addressable
       css_parser (>= 1.6.0)