diff --git a/checkstyle-suppressions.xml b/checkstyle-suppressions.xml
index 448c654..0a54532 100644
--- a/checkstyle-suppressions.xml
+++ b/checkstyle-suppressions.xml
@@ -17,8 +17,8 @@
 -->
 
 <!DOCTYPE suppressions PUBLIC
-    "-//Puppy Crawl//DTD Suppressions 1.1//EN"
-    "http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
+    "-//Checkstyle//DTD SuppressionFilter Configuration 1.1//EN"
+    "https://checkstyle.org/dtds/suppressions_1_1.dtd">
 
 <suppressions>
     <!-- On Windows, it appears that Checkstyle matches files using \ delims -->
diff --git a/checkstyle.xml b/checkstyle.xml
index 987b86e..a8e9ff9 100644
--- a/checkstyle.xml
+++ b/checkstyle.xml
@@ -17,8 +17,8 @@
 -->
 
 <!DOCTYPE module PUBLIC
-    "-//Puppy Crawl//DTD Check Configuration 1.1//EN"
-    "http://www.puppycrawl.com/dtds/configuration_1_1.dtd">
+    "-//Checkstyle//DTD Checkstyle Configuration 1.1//EN"
+    "https://checkstyle.org/dtds/configuration_1_1.dtd">
 
 <!-- Commons Net customization of default Checkstyle behavior -->
 <module name="Checker">