diff --git a/oauth-2.0/httpclient4/pom.xml b/oauth-2.0/httpclient4/pom.xml
index 113e32df..2f6bfa47 100644
--- a/oauth-2.0/httpclient4/pom.xml
+++ b/oauth-2.0/httpclient4/pom.xml
@@ -38,7 +38,7 @@
     <dependency>
       <groupId>org.apache.httpcomponents</groupId>
       <artifactId>httpclient</artifactId>
-      <version>4.5.1</version>
+      <version>4.5.13</version>
     </dependency>
 
     <dependency>