diff --git a/pom.xml b/pom.xml
index fa3e6615..adea4abc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -115,7 +115,7 @@
             <dependency>
                 <groupId>com.qcloud</groupId>
                 <artifactId>cos_api</artifactId>
-                <version>5.4.4</version>
+                <version>5.6.8</version>
             </dependency>
 
             <dependency>