diff --git a/etc/checkstyle/checkstyle.xml b/etc/checkstyle/checkstyle.xml
index 7e918001..97024516 100644
--- a/etc/checkstyle/checkstyle.xml
+++ b/etc/checkstyle/checkstyle.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
-<!DOCTYPE module PUBLIC "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
-		"http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
+<!DOCTYPE module PUBLIC "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
+		"https://checkstyle.org/dtds/configuration_1_3.dtd">
 <module name="Checker">
 	<!-- Supressions -->
 	<module name="SuppressionFilter">
diff --git a/etc/checkstyle/suppressions.xml b/etc/checkstyle/suppressions.xml
index 71acb3d2..6c039443 100644
--- a/etc/checkstyle/suppressions.xml
+++ b/etc/checkstyle/suppressions.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
-<!DOCTYPE suppressions PUBLIC "-//Puppy Crawl//DTD Suppressions 1.1//EN"
-		"http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
+<!DOCTYPE suppressions PUBLIC "-//Checkstyle//DTD SuppressionFilter Configuration 1.2//EN"
+		"https://checkstyle.org/dtds/suppressions_1_2.dtd">
 <suppressions>
 	<!-- global -->
 	<suppress files="[\\/]src[\\/]integration-test[\\/]java[\\/]" checks="Javadoc*"/>