diff --git a/pom.xml b/pom.xml
index 24bb416..7b404ad 100644
--- a/pom.xml
+++ b/pom.xml
@@ -58,7 +58,7 @@
 
         <!-- plugin versions -->
         <maven-surefire-plugin.version>3.2.5</maven-surefire-plugin.version>
-        <maven-source-plugin.version>3.3.0</maven-source-plugin.version>
+        <maven-source-plugin.version>3.3.1</maven-source-plugin.version>
         <maven-javadoc-plugin.version>3.6.3</maven-javadoc-plugin.version>
         <maven-gpg-plugin.version>3.2.2</maven-gpg-plugin.version>
         <central-publishing-maven-plugin.version>0.4.0</central-publishing-maven-plugin.version>