diff --git a/Gemfile b/Gemfile
index 4d485387e..e8d943acf 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,7 +3,7 @@
 source 'https://rubygems.org'
 ruby '>= 2.7.0', '< 3.1.0'
 
-gem 'pkg-config', '~> 1.4'
+gem 'pkg-config', '~> 1.5'
 gem 'rexml', '~> 3.2'
 
 gem 'puma', '~> 5.6'
diff --git a/Gemfile.lock b/Gemfile.lock
index 5a39f040f..fdc45a809 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -462,7 +462,7 @@ GEM
     pg (1.4.5)
     pghero (2.8.3)
       activerecord (>= 5)
-    pkg-config (1.4.9)
+    pkg-config (1.5.1)
     posix-spawn (0.3.15)
     premailer (1.18.0)
       addressable
@@ -810,7 +810,7 @@ DEPENDENCIES
   parslet
   pg (~> 1.4)
   pghero (~> 2.8)
-  pkg-config (~> 1.4)
+  pkg-config (~> 1.5)
   posix-spawn
   premailer-rails
   private_address_check (~> 0.5)