diff --git a/pom.xml b/pom.xml
index 37c3a0b..90300e1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -73,7 +73,7 @@
         <hadoop.version>2.7.5</hadoop.version>
         <hamcrest.version>1.3</hamcrest.version>
         <hsqldb.version>2.4.1</hsqldb.version>
-        <httpclient.version>4.5.6</httpclient.version>
+        <httpclient.version>4.5.13</httpclient.version>
         <httpcore.version>4.4.10</httpcore.version>
         <hydromatic-resource.version>0.6</hydromatic-resource.version>
         <hydromatic-toolbox.version>0.3</hydromatic-toolbox.version>