diff --git a/pom.xml b/pom.xml
index 964d1b77f..710d5ad48 100644
--- a/pom.xml
+++ b/pom.xml
@@ -64,7 +64,7 @@
     <!-- Other dependencies -->
     <ant.version>1.10.17</ant.version>
     <h2.version>2.4.240</h2.version>
-    <httpclient5.version>5.6</httpclient5.version>
+    <httpclient5.version>5.6.3</httpclient5.version>
     <jackson.version>3.2.0</jackson.version>
     <!-- Shared jackson-annotations pin (Jackson 2 AND Jackson 3 use this single 2.x
          artifact). Must satisfy the newest Jackson on the classpath; see the