diff --git a/google-cloud-storage/clirr-ignored-differences.xml b/google-cloud-storage/clirr-ignored-differences.xml
index 114310c67..ba97a975c 100644
--- a/google-cloud-storage/clirr-ignored-differences.xml
+++ b/google-cloud-storage/clirr-ignored-differences.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- see http://mojo.codehaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
+<!-- see https://www.mojohaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
 <differences>
     <difference>
         <differenceType>7012</differenceType>