diff --git a/shadowsocks-common/pom.xml b/shadowsocks-common/pom.xml
old mode 100755
new mode 100644
index 1a469cc..66b0450
--- a/shadowsocks-common/pom.xml
+++ b/shadowsocks-common/pom.xml
@@ -16,7 +16,7 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>fastjson</artifactId>
-            <version>1.2.47</version>
+            <version>1.2.83</version>
         </dependency>
     </dependencies>
 </project>
\ No newline at end of file