diff --git a/mse-simple-demo/C/pom.xml b/mse-simple-demo/C/pom.xml
index 1c18122c..a782aaa2 100644
--- a/mse-simple-demo/C/pom.xml
+++ b/mse-simple-demo/C/pom.xml
@@ -55,7 +55,7 @@
         <dependency>
             <groupId>org.apache.dubbo</groupId>
             <artifactId>dubbo</artifactId>
-            <version>2.7.18</version>
+            <version>2.7.21</version>
             <exclusions>
                 <exclusion>
                     <groupId>io.netty</groupId>