diff --git a/pom.xml b/pom.xml
index bf1b427..db23306 100644
--- a/pom.xml
+++ b/pom.xml
@@ -92,7 +92,7 @@
 
         <!-- plugin versions -->
         <build-helper-maven-plugin.version>3.6.1</build-helper-maven-plugin.version>
-        <flatten-maven-plugin.version>1.7.2</flatten-maven-plugin.version>
+        <flatten-maven-plugin.version>1.7.3</flatten-maven-plugin.version>
         <maven-compiler-plugin.version>3.14.0</maven-compiler-plugin.version>
         <maven-enforcer-plugin.version>3.6.1</maven-enforcer-plugin.version>
         <maven-gpg-plugin.version>3.2.8</maven-gpg-plugin.version>