diff --git a/nifi-nar-bundles/nifi-framework-bundle/pom.xml b/nifi-nar-bundles/nifi-framework-bundle/pom.xml
index f892121164..1855b394dd 100644
--- a/nifi-nar-bundles/nifi-framework-bundle/pom.xml
+++ b/nifi-nar-bundles/nifi-framework-bundle/pom.xml
@@ -592,7 +592,7 @@
             <dependency>
                 <groupId>org.apache.zookeeper</groupId>
                 <artifactId>zookeeper</artifactId>
-                <version>3.5.5</version>
+                <version>3.5.6</version>
             </dependency>
             <dependency>
                 <groupId>org.apache.curator</groupId>
diff --git a/nifi-toolkit/nifi-toolkit-zookeeper-migrator/pom.xml b/nifi-toolkit/nifi-toolkit-zookeeper-migrator/pom.xml
index c28ba954e0..ef64a0fa70 100644
--- a/nifi-toolkit/nifi-toolkit-zookeeper-migrator/pom.xml
+++ b/nifi-toolkit/nifi-toolkit-zookeeper-migrator/pom.xml
@@ -42,7 +42,7 @@
         <dependency>
             <groupId>org.apache.zookeeper</groupId>
             <artifactId>zookeeper</artifactId>
-            <version>3.5.5</version>
+            <version>3.5.6</version>
             <exclusions>
                 <exclusion>
                     <groupId>log4j</groupId>