diff --git a/ml2wf/pom.xml b/ml2wf/pom.xml
index bf3650d7..b3b600d9 100644
--- a/ml2wf/pom.xml
+++ b/ml2wf/pom.xml
@@ -15,7 +15,7 @@
         <version.assembly.plugin>3.3.0</version.assembly.plugin>
         <version.surefire>3.0.0-M1</version.surefire>
         <version.shade.plugin>3.2.3</version.shade.plugin>
-        <version.picocli>4.3.2</version.picocli>
+        <version.picocli>4.6.3</version.picocli>
         <version.log4j>2.13.3</version.log4j>
         <version.commons-io>2.7</version.commons-io>
         <version.jansi>1.18</version.jansi>