diff --git a/Gemfile b/Gemfile
index 797255d6f..1f361e4d5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,7 +3,7 @@
 source 'https://rubygems.org'
 ruby '>= 2.4.0', '< 2.7.0'
 
-gem 'pkg-config', '~> 1.3'
+gem 'pkg-config', '~> 1.4'
 
 gem 'puma', '~> 4.2'
 gem 'rails', '~> 5.2.3'
diff --git a/Gemfile.lock b/Gemfile.lock
index 631764c30..1ca5fd2c2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -435,7 +435,7 @@ GEM
     pg (1.1.4)
     pghero (2.3.0)
       activerecord (>= 5)
-    pkg-config (1.3.9)
+    pkg-config (1.4.0)
     premailer (1.11.1)
       addressable
       css_parser (>= 1.6.0)
@@ -756,7 +756,7 @@ DEPENDENCIES
   parslet
   pg (~> 1.1)
   pghero (~> 2.3)
-  pkg-config (~> 1.3)
+  pkg-config (~> 1.4)
   posix-spawn!
   premailer-rails
   private_address_check (~> 0.5)