diff --git a/vaadin-package-json-optimizer/pom.xml b/vaadin-package-json-optimizer/pom.xml
index f695572..8825509 100644
--- a/vaadin-package-json-optimizer/pom.xml
+++ b/vaadin-package-json-optimizer/pom.xml
@@ -208,7 +208,7 @@
 					<plugin>
 						<groupId>org.codehaus.mojo</groupId>
 						<artifactId>flatten-maven-plugin</artifactId>
-						<version>1.7.2</version>
+						<version>1.7.3</version>
 						<configuration>
 							<flattenMode>ossrh</flattenMode>
 						</configuration>