18:58:50.810 [s0-admin-0] DEBUG com.datastax.oss.driver.internal.core.context.EventBus - [s0] Firing an instance of class com.datastax.oss.driver.internal.core.metadata.schema.events.TableChangeEvent: TableChangeEvent(CREATED test5)
18:58:50.810 [s0-admin-0] DEBUG com.datastax.oss.driver.internal.core.context.EventBus - [s0] Notifying com.datastax.oss.driver.internal.core.util.concurrent.RunOrSchedule$$Lambda$455/0x000000080112e2a8@538a2f0e of TableChangeEvent(CREATED test5)
18:58:50.810 [s0-admin-0] WARN com.datastax.oss.driver.internal.core.control.ControlConnection - [s0] Unexpected error while refreshing schema for a SCHEMA_CHANGE event, keeping previous version
java.util.concurrent.CompletionException: java.lang.NullPointerException: Cannot invoke "io.debezium.connector.cassandra.transforms.type.converter.TypeConverter.convert(com.datastax.oss.driver.api.core.type.DataType)" because "typeConverter" is null
  at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315)
  at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320)
  at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:649)
  at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:482)
  at com.datastax.oss.driver.shaded.netty.channel.DefaultEventLoop.run(DefaultEventLoop.java:54)
  at com.datastax.oss.driver.shaded.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
  at com.datastax.oss.driver.shaded.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
  at com.datastax.oss.driver.shaded.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
  at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.NullPointerException: Cannot invoke "io.debezium.connector.cassandra.transforms.type.converter.TypeConverter.convert(com.datastax.oss.driver.api.core.type.DataType)" because "typeConverter" is null
  at io.debezium.connector.cassandra.transforms.CassandraTypeConverter.convert(CassandraTypeConverter.java:78)
  at io.debezium.connector.cassandra.RowData.rowSchema(RowData.java:123)
  at io.debezium.connector.cassandra.RowData.rowSchema(RowData.java:116)
  at io.debezium.connector.cassandra.AbstractSchemaChangeListener.getKeyValueSchema(AbstractSchemaChangeListener.java:72)
  at io.debezium.connector.cassandra.Cassandra4SchemaChangeListener.onTableCreated(Cassandra4SchemaChangeListener.java:119)
  at com.datastax.oss.driver.internal.core.session.SchemaListenerNotifier.onTableChangeEvent(SchemaListenerNotifier.java:127)
  at com.datastax.oss.driver.internal.core.util.concurrent.RunOrSchedule.lambda$on$1(RunOrSchedule.java:64)
  at com.datastax.oss.driver.internal.core.context.EventBus.fire(EventBus.java:95)
  at com.datastax.oss.driver.internal.core.metadata.MetadataManager.apply(MetadataManager.java:518)
  at com.datastax.oss.driver.internal.core.metadata.MetadataManager$SingleThreaded.parseAndApplySchemaRows(MetadataManager.java:490)
  at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:646)
  ... 6 common frames omitted

diff --git a/core/src/main/java/io/debezium/connector/cassandra/transforms/CassandraTypeConverter.java b/core/src/main/java/io/debezium/connector/cassandra/transforms/CassandraTypeConverter.java
index e56cf70..9775416 100644
--- a/core/src/main/java/io/debezium/connector/cassandra/transforms/CassandraTypeConverter.java
+++ b/core/src/main/java/io/debezium/connector/cassandra/transforms/CassandraTypeConverter.java
@@ -20,6 +20,7 @@ import org.apache.cassandra.db.marshal.DurationType;
 import org.apache.cassandra.db.marshal.FloatType;
 import org.apache.cassandra.db.marshal.InetAddressType;
 import org.apache.cassandra.db.marshal.Int32Type;
+import org.apache.cassandra.db.marshal.IntegerType;
 import org.apache.cassandra.db.marshal.LongType;
 import org.apache.cassandra.db.marshal.ShortType;
 import org.apache.cassandra.db.marshal.SimpleDateType;
@@ -71,6 +72,7 @@ public final class CassandraTypeConverter {
         typeMap.put(ProtocolConstants.DataType.TUPLE, new TupleTypeConverter());
         typeMap.put(ProtocolConstants.DataType.UDT, new UserTypeConverter());
         typeMap.put(ProtocolConstants.DataType.UUID, new BasicTypeConverter<>(UUIDType.instance));
+        typeMap.put(ProtocolConstants.DataType.VARINT, new BasicTypeConverter<>(IntegerType.instance));
     }

     public static AbstractType<?> convert(com.datastax.oss.driver.api.core.type.DataType type) { 
diff --git a/core/src/main/java/io/debezium/connector/cassandra/transforms/CassandraTypeDeserializer.java b/core/src/main/java/io/debezium/connector/cassandra/transforms/CassandraTypeDeserializer.java
index c4234b1..b891667 100644
--- a/core/src/main/java/io/debezium/connector/cassandra/transforms/CassandraTypeDeserializer.java
+++ b/core/src/main/java/io/debezium/connector/cassandra/transforms/CassandraTypeDeserializer.java
@@ -34,6 +34,7 @@ import org.apache.cassandra.db.marshal.DurationType;
 import org.apache.cassandra.db.marshal.FloatType;
 import org.apache.cassandra.db.marshal.InetAddressType;
 import org.apache.cassandra.db.marshal.Int32Type;
+import org.apache.cassandra.db.marshal.IntegerType;
 import org.apache.cassandra.db.marshal.ListType;
 import org.apache.cassandra.db.marshal.LongType;
 import org.apache.cassandra.db.marshal.MapType;
@@ -59,6 +60,7 @@ import io.debezium.connector.cassandra.transforms.type.deserializer.BasicTypeDes
 import io.debezium.connector.cassandra.transforms.type.deserializer.CollectionTypeDeserializer;
 import io.debezium.connector.cassandra.transforms.type.deserializer.DurationTypeDeserializer;
 import io.debezium.connector.cassandra.transforms.type.deserializer.InetAddressDeserializer;
+import io.debezium.connector.cassandra.transforms.type.deserializer.IntegerTypeDeserializer;
 import io.debezium.connector.cassandra.transforms.type.deserializer.ListTypeDeserializer;
 import io.debezium.connector.cassandra.transforms.type.deserializer.MapTypeDeserializer;
 import io.debezium.connector.cassandra.transforms.type.deserializer.SetTypeDeserializer;
@@ -124,6 +126,7 @@ public final class CassandraTypeDeserializer {
         tmp.put(DurationType.class, new DurationTypeDeserializer(deserializer));
         tmp.put(UUIDType.class, new UUIDTypeDeserializer(deserializer));
         tmp.put(TimeUUIDType.class, new TimeUUIDTypeDeserializer(deserializer));
+        tmp.put(IntegerType.class, new IntegerTypeDeserializer(deserializer));
         // Collection Types
         tmp.put(ListType.class, new ListTypeDeserializer(deserializer));
         tmp.put(SetType.class, new SetTypeDeserializer(deserializer));
diff --git a/core/src/main/java/io/debezium/connector/cassandra/transforms/type/deserializer/IntegerTypeDeserializer.java b/core/src/main/java/io/debezium/connector/cassandra/transforms/type/deserializer/IntegerTypeDeserializer.java
new file mode 100644
index 0000000..f240cee
--- /dev/null
+++ b/core/src/main/java/io/debezium/connector/cassandra/transforms/type/deserializer/IntegerTypeDeserializer.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright Debezium Authors.
+ *
+ * Licensed under the Apache Software License version 2.0, available at http://www.apache.org/licenses/LICENSE-2.0
+ */
+package io.debezium.connector.cassandra.transforms.type.deserializer;
+
+import io.debezium.connector.cassandra.transforms.CassandraTypeKafkaSchemaBuilders;
+
+import java.math.BigInteger;
+import java.nio.ByteBuffer;
+
+import org.apache.cassandra.db.marshal.AbstractType;
+import org.apache.kafka.connect.data.SchemaBuilder;
+
+import io.debezium.connector.cassandra.transforms.DebeziumTypeDeserializer;
+
+public class IntegerTypeDeserializer extends LogicalTypeDeserializer {
+
+    private final DebeziumTypeDeserializer deserializer;
+
+    public IntegerTypeDeserializer(DebeziumTypeDeserializer deserializer) {
+        this.deserializer = deserializer;
+    }
+
+    @Override
+    public Object deserialize(AbstractType<?> abstractType, ByteBuffer bb) {
+        Object value = deserializer.deserialize(abstractType, bb);
+        return formatDeserializedValue(abstractType, value);
+    }
+
+    @Override
+    public SchemaBuilder getSchemaBuilder(AbstractType<?> abstractType) {
+        return CassandraTypeKafkaSchemaBuilders.STRING_TYPE;
+    }
+
+    @Override
+    public Object formatDeserializedValue(AbstractType<?> abstractType, Object value) {
+        BigInteger bigint = (BigInteger) value;
+        return bigint.toString();
+    }
+}