diff --git a/send-mail/pom.xml b/send-mail/pom.xml
index ab773a7..7d5d835 100644
--- a/send-mail/pom.xml
+++ b/send-mail/pom.xml
@@ -49,7 +49,7 @@
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>
             <artifactId>httpclient</artifactId>
-            <version>4.5.3</version>
+            <version>4.5.13</version>
         </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>