diff --git a/config/checkstyle/checkstyle.xml b/config/checkstyle/checkstyle.xml
index c7d06e37869..9a485459408 100644
--- a/config/checkstyle/checkstyle.xml
+++ b/config/checkstyle/checkstyle.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!DOCTYPE module PUBLIC
           "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
-          "http://checkstyle.sourceforge.net/dtds/configuration_1_3.dtd">
+          "https://checkstyle.org/dtds/configuration_1_3.dtd">
 
 <!--
     Checkstyle configuration that checks the Google coding conventions from Google Java Style