diff --git a/pom.xml b/pom.xml
index fe453101..2a476b8d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
     </scm>
 
     <properties>
-        <icu4j.version>51.3</icu4j.version>
+        <icu4j.version>65.1</icu4j.version>
         <hsqldb.version>2.3.2</hsqldb.version>
         <jaxb2basics.version>0.6.0</jaxb2basics.version>
         <jackson.version>2.9.10</jackson.version>