diff --git a/rdd-technical-reference.md b/rdd-technical-reference.md
index a574d55489c6e9ad491177cd676d62dfef9ba527..c72c8a8880d3b684b5599698b74f2bf06480d675 100644
--- a/rdd-technical-reference.md
+++ b/rdd-technical-reference.md
@@ -223,7 +223,9 @@ The reason for using a build tool is to be able to build and/or test a code proj
 
 * **bash scripting**: (BdNPrint, FontanePrint)
 * **eXist**: Ant (SADE)
-* **Java**: Maven (TextGrid)
+* **Java**: 
+    - Maven (TextGrid)
+    - gradle (TextGrid)
 * **JavaScript**:
     - bower (DARIAH-DE GeoBrowser, tgForms)
     - cake (tgForms)