diff --git a/rpki-validator-app/pom.xml b/rpki-validator-app/pom.xml
index 5ecced0f..ae04109e 100644
--- a/rpki-validator-app/pom.xml
+++ b/rpki-validator-app/pom.xml
@@ -107,7 +107,7 @@
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
             <artifactId>httpclient</artifactId>
-            <version>4.3.6</version>
+            <version>4.5.13</version>
         </dependency>
 
         <dependency>