diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index 9ff6c3cdc..895ca1ab4
--- a/pom.xml
+++ b/pom.xml
@@ -43,7 +43,7 @@
     <maven-surefire-plugin.version>2.13</maven-surefire-plugin.version>
     <findbugs-maven-plugin.version>3.0.4</findbugs-maven-plugin.version>
     <maven-checkstyle-plugin.version>2.17</maven-checkstyle-plugin.version>
-    <checkstyle.version>8.12</checkstyle.version>
+    <checkstyle.version>8.18</checkstyle.version>
 
     <!-- dependency versions -->
     <commons-codec.version>1.9</commons-codec.version>