diff --git a/build.gradle b/build.gradle
index 3d0b9502f..5b74228f0 100644
--- a/build.gradle
+++ b/build.gradle
@@ -82,7 +82,7 @@ For more details, please see https://issues.apache.org/jira/browse/AURORA-1169
   ext.gsonRev = '2.3.1'
   ext.guavaRev = '29.0-jre'
   ext.guiceRev = '4.2.3'
-  ext.httpclientRev = '4.5.2'
+  ext.httpclientRev = '4.5.13'
   ext.httpcoreRev = '4.4.13'
   ext.asyncHttpclientRev = '2.0.37'
   ext.jacksonRev = '2.5.1'