diff --git a/.gitignore b/.gitignore
index 1bc59b0..912da2d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,4 +5,6 @@ target/
 test-output/
 bin/
 .idea
-j2e-pac4j.iml
\ No newline at end of file
+j2e-pac4j.iml
+.pmd
+.pmdruleset.xml
diff --git a/pom.xml b/pom.xml
index d19ece7..ce42f07 100644
--- a/pom.xml
+++ b/pom.xml
@@ -118,7 +118,7 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>findbugs-maven-plugin</artifactId>
-                <version>3.0.4</version>
+                <version>3.0.5</version>
                 <configuration>
                     <effort>Low</effort>
                     <threshold>Max</threshold>