diff --git a/component/src/main/java/org/ballerinalang/cassandra/CassandraDataIterator.java b/component/src/main/java/org/ballerinalang/cassandra/CassandraDataIterator.java
index 087d2f2..ee6747d 100644
--- a/component/src/main/java/org/ballerinalang/cassandra/CassandraDataIterator.java
+++ b/component/src/main/java/org/ballerinalang/cassandra/CassandraDataIterator.java
@@ -87,19 +87,19 @@ public String getString(int columnIndex) {
     }
 
     @Override
-    public long getInt(int columnIndex) {
+    public Long getInt(int columnIndex) {
         this.checkCurrentRow();
-        return this.current.getInt(columnIndex - 1);
+        return (long) this.current.getInt(columnIndex - 1);
     }
 
     @Override
-    public double getFloat(int columnIndex) {
+    public Double getFloat(int columnIndex) {
         this.checkCurrentRow();
-        return this.current.getFloat(columnIndex - 1);
+        return (double) this.current.getFloat(columnIndex - 1);
     }
 
     @Override
-    public boolean getBoolean(int columnIndex) {
+    public Boolean getBoolean(int columnIndex) {
         this.checkCurrentRow();
         return this.current.getBool(columnIndex - 1);
     }
diff --git a/pom.xml b/pom.xml
index 0b55448..0daaaaa 100644
--- a/pom.xml
+++ b/pom.xml
@@ -329,7 +329,7 @@
 
     <properties>
         <project.scm.id>my-scm-server</project.scm.id>
-        <ballerina.version>0.990.0</ballerina.version>
+        <ballerina.version>0.990.1-SNAPSHOT</ballerina.version>
         <cassandra.version>3.6.0</cassandra.version>
         <com.google.guava.version>19.0</com.google.guava.version>
         <io.dropwizard.metrics.version>3.1.2</io.dropwizard.metrics.version>