diff --git a/crawler/pom.xml b/crawler/pom.xml
index 71bb035..bdf0ff0 100644
--- a/crawler/pom.xml
+++ b/crawler/pom.xml
@@ -104,7 +104,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-all</artifactId>
-            <version>4.1.17.Final</version>
+            <version>4.1.42.Final</version>
         </dependency>
 
         <dependency>