diff --git a/org.wikipathways.client/pom.xml b/org.wikipathways.client/pom.xml
index 1e6685a..d915435 100644
--- a/org.wikipathways.client/pom.xml
+++ b/org.wikipathways.client/pom.xml
@@ -63,6 +63,11 @@
             <artifactId>commons-io</artifactId>
             <version>2.4</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.httpcomponents</groupId>
+            <artifactId>httpclient</artifactId>
+            <version>4.5.13</version>
+        </dependency>
     </dependencies>
 
     <build>