diff --git a/Gemfile.lock b/Gemfile.lock
index 416147a1e..b1fb350d4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -422,7 +422,7 @@ GEM
     pg (1.2.3)
     pghero (2.8.1)
       activerecord (>= 5)
-    pkg-config (1.4.5)
+    pkg-config (1.4.6)
     posix-spawn (0.3.15)
     premailer (1.14.2)
       addressable