diff --git a/pom.xml b/pom.xml
index 75ae19b82..228228d46 100644
--- a/pom.xml
+++ b/pom.xml
@@ -156,7 +156,7 @@
         <maven-surefire-plugin-version>3.1.2</maven-surefire-plugin-version>
         <maven-javadoc-plugin-version>3.12.0</maven-javadoc-plugin-version>
         <maven-release-plugin-version>3.3.1</maven-release-plugin-version>
-        <flatten-maven-plugin-version>1.8.0</flatten-maven-plugin-version>
+        <flatten-maven-plugin-version>1.9.0</flatten-maven-plugin-version>
         <surefire.version>${maven-surefire-plugin-version}</surefire.version>
         <jkube-version>1.20.0</jkube-version>
         <fabric8-maven-plugin-version>4.4.2</fabric8-maven-plugin-version>