diff --git a/common.sbt b/common.sbt
index d48fe3b..94c6ebd 100644
--- a/common.sbt
+++ b/common.sbt
@@ -5,6 +5,12 @@
 // To edit this file use the main version in https://github.com/playframework/.github/blob/main/sbt/common.sbt //
 /////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
+/**
+ * If you need extra commands to format source code or other documents, add following line to your `build.sbt`
+ * {{{
+ *   val _ = sys.props += ("sbt_formatCode" -> List("<command1>", "<command2>",...).mkString(";"))
+ * }}}
+ */
 addCommandAlias(
   "formatCode",
   List(
@@ -12,9 +18,15 @@ addCommandAlias(
     "scalafmtSbt",
     "scalafmtAll",
     "javafmtAll"
-  ).mkString(";")
+  ).mkString(";") + sys.props.get("sbt_formatCode").map(";" + _).getOrElse("")
 )
 
+/**
+ * If you need extra commands to validate source code or other documents, add following line to your `build.sbt`
+ * {{{
+ *   val _ = sys.props += ("sbt_validateCode" -> List("<command1>", "<command2>",...).mkString(";"))
+ * }}}
+ */
 addCommandAlias(
   "validateCode",
   List(
@@ -22,5 +34,5 @@ addCommandAlias(
     "scalafmtSbtCheck",
     "scalafmtCheckAll",
     "javafmtCheckAll"
-  ).mkString(";")
+  ).mkString(";") + sys.props.get("sbt_validateCode").map(";" + _).getOrElse("")
 )