diff --git a/postpone/pom.xml b/postpone/pom.xml
index 6d6d732..3e45bd9 100644
--- a/postpone/pom.xml
+++ b/postpone/pom.xml
@@ -65,7 +65,7 @@
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
             <artifactId>httpclient</artifactId>
-            <version>4.5.12</version>
+            <version>4.5.13</version>
         </dependency>
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>