diff --git a/constants.properties b/constants.properties
index 739e5aa931..cc0dd938ca 100644
--- a/constants.properties
+++ b/constants.properties
@@ -23,4 +23,5 @@ snakeYamlVersion=1.19
 caffeineVersion=2.6.2
 metricsVersion=3.2.5
 metricsNewRelicVersion=1.1.1
+# gradle JPMS plugin for Java 9+
 gradleModulesPluginVersion=1.5.0