diff --git a/bacchain-sdk-java/pom.xml b/bacchain-sdk-java/pom.xml
old mode 100755
new mode 100644
index 16ec2ad..8c536a2
--- a/bacchain-sdk-java/pom.xml
+++ b/bacchain-sdk-java/pom.xml
@@ -86,7 +86,7 @@
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
             <artifactId>httpclient</artifactId>
-            <version>4.5.4</version>
+            <version>4.5.13</version>
         </dependency>
     </dependencies>