diff --git a/pom.xml b/pom.xml
index 732ec3b..ef104fe 100644
--- a/pom.xml
+++ b/pom.xml
@@ -60,11 +60,11 @@
         <readyForAutoVersion>false</readyForAutoVersion>
 
         <!-- plugin versions -->
-        <flatten-maven-plugin.version>1.6.0</flatten-maven-plugin.version>
-        <maven-surefire-plugin.version>3.5.2</maven-surefire-plugin.version>
+        <flatten-maven-plugin.version>1.7.0</flatten-maven-plugin.version>
+        <maven-surefire-plugin.version>3.5.3</maven-surefire-plugin.version>
         <maven-source-plugin.version>3.3.1</maven-source-plugin.version>
-        <maven-install-plugin.version>3.1.3</maven-install-plugin.version>
-        <maven-deploy-plugin.version>3.1.3</maven-deploy-plugin.version>
+        <maven-install-plugin.version>3.1.4</maven-install-plugin.version>
+        <maven-deploy-plugin.version>3.1.4</maven-deploy-plugin.version>
         <maven-javadoc-plugin.version>3.11.2</maven-javadoc-plugin.version>
         <maven-gpg-plugin.version>3.2.7</maven-gpg-plugin.version>
         <central-publishing-maven-plugin.version>0.7.0</central-publishing-maven-plugin.version>