diff --git a/pom.xml b/pom.xml
index 3ab7ad0..b507678 100644
--- a/pom.xml
+++ b/pom.xml
@@ -182,7 +182,7 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xs
     <dependency>
       <groupId>org.apache.httpcomponents</groupId>
       <artifactId>httpclient</artifactId>
-      <version>4.5.3</version>
+      <version>4.5.13</version>
     </dependency>
 
     <!-- https://mvnrepository.com/artifact/com.google.openrtb/openrtb-core -->