diff --git a/Gemfile.lock b/Gemfile.lock
index c931451c6..0db849720 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -399,7 +399,7 @@ GEM
     pg (1.2.3)
     pghero (2.7.0)
       activerecord (>= 5)
-    pkg-config (1.4.1)
+    pkg-config (1.4.2)
     posix-spawn (0.3.15)
     premailer (1.13.1)
       addressable