diff --git a/pom.xml b/pom.xml
index db41985ab..321d99af0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1179,6 +1179,12 @@
http://www.antlr.org/antlr4-maven-plugin
http://maven.apache.org/plugins/maven-release-plugin/
+
+ http://www.sonatype.com/public-parent/nexus-maven-plugins/nexus-staging/nexus-staging-maven-plugin/
+
+ http://www.mojohaus.org/build-helper-maven-plugin/build-helper-maven-plugin
+
+ https://github.com/checkstyle/checkstyle/issues/1555