diff --git a/pom.xml b/pom.xml
index c29c518..359ad3e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -91,7 +91,7 @@
 
         <javafx.version>17.0.1</javafx.version>
 
-        <strolch.version>1.8.6</strolch.version>
+        <strolch.version>1.8.9</strolch.version>
 
         <!-- test time dependencies -->
         <junit.version>4.13.2</junit.version>