[BAHIR-199] Bump kudu version to 1.9.0

Closes #48
diff --git a/flink-connector-kudu/README.md b/flink-connector-kudu/README.md
index af2985b..9b75aa7 100644
--- a/flink-connector-kudu/README.md
+++ b/flink-connector-kudu/README.md
@@ -9,7 +9,7 @@
       <version>1.1-SNAPSHOT</version>
     </dependency>
 
-*Version Compatibility*: This module is compatible with Apache Kudu *1.7.1* (last stable version).
+*Version Compatibility*: This module is compatible with Apache Kudu *1.9.0* (last stable version).
 
 Note that the streaming connectors are not part of the binary distribution of Flink. You need to link them into your job jar for cluster execution.
 See how to link with them for cluster execution [here](https://ci.apache.org/projects/flink/flink-docs-stable/start/dependencies.html).
diff --git a/flink-connector-kudu/pom.xml b/flink-connector-kudu/pom.xml
index 61ab4a6..d51341b 100644
--- a/flink-connector-kudu/pom.xml
+++ b/flink-connector-kudu/pom.xml
@@ -30,7 +30,7 @@
   <packaging>jar</packaging>
 
   <properties>
-    <kudu.version>1.7.1</kudu.version>
+    <kudu.version>1.9.0</kudu.version>
 
     <junit.groups>!DockerTest</junit.groups>
   </properties>