diff --git a/arangodb/pom.xml b/arangodb/pom.xml
index 9459f08e72..8866483ade 100644
--- a/arangodb/pom.xml
+++ b/arangodb/pom.xml
@@ -45,7 +45,7 @@ LICENSE file.
     <dependency>
       <groupId>org.apache.httpcomponents</groupId>
       <artifactId>httpclient</artifactId>
-      <version>4.5.1</version>
+      <version>4.5.6</version>
     </dependency>
 	<dependency>
 		<groupId>org.slf4j</groupId>
diff --git a/rest/pom.xml b/rest/pom.xml
index 6120581fd7..430b1bd757 100644
--- a/rest/pom.xml
+++ b/rest/pom.xml
@@ -28,7 +28,7 @@
 
     <tomcat.version>8.0.28</tomcat.version>
     <jersey.version>2.6</jersey.version>
-    <httpclient.version>4.5.1</httpclient.version>
+    <httpclient.version>4.5.6</httpclient.version>
     <httpcore.version>4.4.4</httpcore.version>
     <junit.version>4.12</junit.version>
     <system-rules.version>1.16.0</system-rules.version>