diff --git a/pom.xml b/pom.xml
index df678f94c..373722ada 100644
--- a/pom.xml
+++ b/pom.xml
@@ -349,7 +349,7 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>flatten-maven-plugin</artifactId>
-                <version>1.8.0</version>
+                <version>1.9.0</version>
                 <configuration>
                     <flattenMode>ossrh</flattenMode>
                     <pomElements>