diff --git a/mio-parent/pom.xml b/mio-parent/pom.xml
index 3966c70..52a5e31 100644
--- a/mio-parent/pom.xml
+++ b/mio-parent/pom.xml
@@ -24,7 +24,7 @@
         <slf4j.version>1.6.4</slf4j.version>
         <jackson.version>2.7.4</jackson.version>
         <druid.version>1.0.9</druid.version>
-        <httpclient.version>4.5.6</httpclient.version>
+        <httpclient.version>4.5.13</httpclient.version>
         <jstl.version>1.2</jstl.version>
         <servlet-api.version>2.5</servlet-api.version>
         <jsp-api.version>2.0</jsp-api.version>