diff --git a/src/common/java/module-info.java b/src/common/java/module-info.java
index 3cce6002..aedd5030 100644
--- a/src/common/java/module-info.java
+++ b/src/common/java/module-info.java
@@ -1,4 +1,4 @@
-module common {
+open module common {
 
     requires de.siegmar.fastcsv;
     requires org.assertj.core;