diff --git a/apps/backend/pom.xml b/apps/backend/pom.xml
index ff8e6f5dc..1ba20c785 100644
--- a/apps/backend/pom.xml
+++ b/apps/backend/pom.xml
@@ -152,6 +152,12 @@
snappy-java
${snappy-java.version}
+
+ org.apache.zookeeper
+ zookeeper
+ 3.9.1
+
+
org.apache.lucene
lucene-core