diff --git a/examples/knn/pom.xml b/examples/knn/pom.xml
old mode 100755
new mode 100644
index e6b62089..377bbd2e
--- a/examples/knn/pom.xml
+++ b/examples/knn/pom.xml
@@ -30,7 +30,7 @@
 		<dependency>
 			<groupId>com.google.code.gson</groupId>
 			<artifactId>gson</artifactId>
-			<version>2.8.5</version>
+			<version>2.8.9</version>
 		</dependency>
 		<dependency>
 			<groupId>com.amazonaws</groupId>