diff --git a/libreplan-webapp/pom.xml b/libreplan-webapp/pom.xml
index f7de9c0be..055ac512e 100644
--- a/libreplan-webapp/pom.xml
+++ b/libreplan-webapp/pom.xml
@@ -463,7 +463,7 @@
         </dependency>
 
         <dependency>
-            <groupId>org.zkoss.zkforge</groupId>
+            <groupId>dev.libreplan.zkoss</groupId>
             <artifactId>timeplotz</artifactId>
         </dependency>
 
diff --git a/pom.xml b/pom.xml
index e1f25b46e..23f884ab1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -599,9 +599,9 @@
 
             <!-- ZK Timeplot -->
             <dependency>
-                <groupId>org.zkoss.zkforge</groupId>
+                <groupId>dev.libreplan.zkoss</groupId>
                 <artifactId>timeplotz</artifactId>
-                <version>1.1_50</version>
+                <version>1.1_50b</version>
             </dependency>
 
             <dependency>