diff --git a/week18/IoTCounter/counters/counters/pom.xml b/week18/IoTCounter/counters/counters/pom.xml
index 9c45ae8..c295fe1 100644
--- a/week18/IoTCounter/counters/counters/pom.xml
+++ b/week18/IoTCounter/counters/counters/pom.xml
@@ -45,7 +45,7 @@
 		<dependency>
     <groupId>com.squareup.okhttp3</groupId>
     <artifactId>okhttp</artifactId>
-    <version>3.4.2</version>
+    <version>4.9.2</version>
 </dependency>
 	</dependencies>