diff --git a/com.ibm.streamsx.slack/pom.xml b/com.ibm.streamsx.slack/pom.xml
index a10bc74..2b98c0c 100644
--- a/com.ibm.streamsx.slack/pom.xml
+++ b/com.ibm.streamsx.slack/pom.xml
@@ -9,7 +9,7 @@
     <dependency>
       <groupId>org.apache.httpcomponents</groupId>
       <artifactId>httpclient</artifactId>
-      <version>4.5.3</version>
+      <version>4.5.13</version>
     </dependency>
   </dependencies>
   <inceptionYear>2009</inceptionYear>