diff --git a/functions/idcsOAuthAsserter/pom.xml b/functions/idcsOAuthAsserter/pom.xml
index 2492ca1..0cd729f 100644
--- a/functions/idcsOAuthAsserter/pom.xml
+++ b/functions/idcsOAuthAsserter/pom.xml
@@ -49,7 +49,7 @@ Licensed under the Universal Permissive License v 1.0 as shown at https://oss.or
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
             <artifactId>httpclient</artifactId>
-            <version>4.5.9</version>
+            <version>4.5.13</version>
             <scope>compile</scope>
         </dependency>