diff --git a/pom.xml b/pom.xml
index 23ad0f6..86ff29f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -178,7 +178,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>flatten-maven-plugin</artifactId>
-        <version>1.8.0</version>
+        <version>1.9.0</version>
 
         <configuration>
           <flattenMode>oss</flattenMode>