diff --git a/src/main/java/module-info.java b/src/main/java/module-info.java
index 8200f8e..4108b1d 100644
--- a/src/main/java/module-info.java
+++ b/src/main/java/module-info.java
@@ -3,5 +3,4 @@ module org.xbib.standardnumber {
     exports org.xbib.standardnumber.checksum;
     exports org.xbib.standardnumber.checksum.iso7064;
     requires java.xml; // for reading ISBN range message file
-    requires java.logging;
 }