diff --git a/README.md b/README.md
index 76c9058..92e8b87 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ The rest of the operations return dummy responses when invoked.
 For starting an embedded server the `BonsaiSnsServerBuilder` can be used
 ```
 BonsaiSnsServer server = new BonsaiSnsServer.Builder()
-    .withAccountId(123L)
+    .withAccountId("123")
     .withPort(9999)
     .withRegion("someRegion")
     .withSqsEndpoint("http://localhost:9324")
@@ -40,13 +40,13 @@ server.stop();
 
 ### Stand-alone server
 
-Download the [jar](https://repo1.maven.org/maven2/io/github/gilbertojrequena/bonsai-sns/0.1.6/bonsai-sns-0.1.6.jar) and execute it 
+Download the [jar](https://repo1.maven.org/maven2/io/github/gilbertojrequena/bonsai-sns/0.1.7/bonsai-sns-0.1.7.jar) and execute it 
 
-`java -jar bonsai-sns-0.1.6.jar port=9494 region=region accountId=987654321 sqsEndpoint=http://localhost:9432 sqsAccessKey=foo sqsSecretKey=bar`
+`java -jar bonsai-sns-0.1.7.jar port=9494 region=region accountId=987654321 sqsEndpoint=http://localhost:9432 sqsAccessKey=foo sqsSecretKey=bar`
 
 or 
 
-`java -Dconfig.file=bonsai-sns.conf -jar bonsai-sns-0.1.6.jar`
+`java -Dconfig.file=bonsai-sns.conf -jar bonsai-sns-0.1.7.jar`
 
 ### Environment configuration
 bonsai-sns uses [Typesafe Config](https://github.com/lightbend/config) for loading its configuration, topics and subscriptions can be created on startup by providing an `application.conf` 
@@ -57,7 +57,7 @@ configuration file
 bonsai-sns {
   port = 7979
   region = "region"
-  accountId = 123456789
+  accountId = "123456789"
   sqsEndpoint = "http://localhost:9324"
   sqsAccessKey = "foo"
   sqsSecretKey = "bar"
@@ -103,7 +103,7 @@ Environment configuration can also be done using the `BonsaiSnsServerBuilder` an
 
 ```
 BonsaiSnsServer server = new BonsaiSnsServer.Builder()
-    .withAccountId(123L)
+    .withAccountId("123")
     .withPort(9999)
     .withRegion("someRegion")
     .withSqsEndpoint("http://localhost:9324")
@@ -198,7 +198,7 @@ server.stop();
 <dependency>
   <groupId>io.github.gilbertojrequena</groupId>
   <artifactId>bonsai-sns</artifactId>
-  <version>0.1.6</version>
+  <version>0.1.7</version>
 </dependency>
 ```
 
diff --git a/build.gradle b/build.gradle
index e94d30a..703804b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ plugins {
 }
 
 group 'io.github.gilbertojrequena'
-version '0.1.7-SNAPSHOT'
+version '0.1.7'
 
 sourceCompatibility = 1.8
 
diff --git a/example.conf b/example.conf
index db5aa76..5e670e7 100644
--- a/example.conf
+++ b/example.conf
@@ -1,7 +1,7 @@
 bonsai-sns {
   port = 7979
   region = "region"
-  accountId = 123456789
+  accountId = "123456789"
   sqsEndpoint = "http://localhost:9324"
   sqsAccessKey = "foo"
   sqsSecretKey = "bar"
diff --git a/src/main/kotlin/io/github/gilbertojrequena/bonsai_sns/Main.kt b/src/main/kotlin/io/github/gilbertojrequena/bonsai_sns/Main.kt
index 2e74994..edff8ff 100644
--- a/src/main/kotlin/io/github/gilbertojrequena/bonsai_sns/Main.kt
+++ b/src/main/kotlin/io/github/gilbertojrequena/bonsai_sns/Main.kt
@@ -20,7 +20,7 @@ private fun configFromArgs(args: Array<String>): BonsaiSnsConfig {
     return BonsaiSnsConfig(
         port = argsMap["port"]?.toInt(),
         region = argsMap["region"],
-        accountId = argsMap["accountId"]?.toLong(),
+        accountId = argsMap["accountId"],
         sqsEndpoint = argsMap["sqsEndpoint"],
         sqsAccessKey = argsMap["sqsAccessKey"],
         sqsSecretKey = argsMap["sqsSecretKey"]
diff --git a/src/main/kotlin/io/github/gilbertojrequena/bonsai_sns/server/BonsaiSnsConfig.kt b/src/main/kotlin/io/github/gilbertojrequena/bonsai_sns/server/BonsaiSnsConfig.kt
index 8140bf0..36d4206 100644
--- a/src/main/kotlin/io/github/gilbertojrequena/bonsai_sns/server/BonsaiSnsConfig.kt
+++ b/src/main/kotlin/io/github/gilbertojrequena/bonsai_sns/server/BonsaiSnsConfig.kt
@@ -7,7 +7,7 @@ import com.typesafe.config.ConfigFactory
 public class BonsaiSnsConfig(
     internal var port: Int? = null,
     internal var region: String? = null,
-    internal var accountId: Long? = null,
+    internal var accountId: String? = null,
     internal var bonsaiSnsEnvironment: BonsaiSnsEnvironment? = null,
     internal var sqsEndpoint: String? = null,
     internal var sqsAccessKey: String? = null,
@@ -16,7 +16,7 @@ public class BonsaiSnsConfig(
     companion object {
         private const val DEFAULT_PORT = 7979
         private const val DEFAULT_REGION = "region"
-        private const val DEFAULT_ACCOUNT_ID = 123456789L
+        private const val DEFAULT_ACCOUNT_ID = "123456789"
     }
 
     init {
@@ -37,7 +37,7 @@ public class BonsaiSnsConfig(
         }
         if (accountId == null) {
             accountId = getOrDefault(bonsaiSnsConfig, DEFAULT_ACCOUNT_ID) {
-                it.getLong("accountId")
+                it.getString("accountId")
             }
         }
         if (sqsEndpoint.isNullOrBlank()) {
diff --git a/src/main/kotlin/io/github/gilbertojrequena/bonsai_sns/server/BonsaiSnsServer.kt b/src/main/kotlin/io/github/gilbertojrequena/bonsai_sns/server/BonsaiSnsServer.kt
index 8544204..c900c24 100644
--- a/src/main/kotlin/io/github/gilbertojrequena/bonsai_sns/server/BonsaiSnsServer.kt
+++ b/src/main/kotlin/io/github/gilbertojrequena/bonsai_sns/server/BonsaiSnsServer.kt
@@ -113,7 +113,7 @@ class BonsaiSnsServer(private val config: BonsaiSnsConfig) {
     class Builder {
         internal var port: Int? = null
             private set
-        internal var accountId: Long? = null
+        internal var accountId: String? = null
             private set
         internal var region: String? = null
             private set
@@ -127,7 +127,7 @@ class BonsaiSnsServer(private val config: BonsaiSnsConfig) {
             private set
 
         fun withPort(port: Int): Builder = apply { this.port = port }
-        fun withAccountId(accountId: Long): Builder = apply { this.accountId = accountId }
+        fun withAccountId(accountId: String): Builder = apply { this.accountId = accountId }
         fun withRegion(region: String): Builder = apply { this.region = region }
         fun withBonsaiSnsEnvironmentDefinition(bonsaiSnsEnvironment: BonsaiSnsEnvironment): Builder =
             apply { this.bonsaiSnsEnvironment = bonsaiSnsEnvironment }
diff --git a/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/api/AwsSnsInterfaceTest.kt b/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/api/AwsSnsInterfaceTest.kt
index 38158d9..7022b0a 100644
--- a/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/api/AwsSnsInterfaceTest.kt
+++ b/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/api/AwsSnsInterfaceTest.kt
@@ -50,7 +50,7 @@ internal class AwsSnsInterfaceTest {
         private val basicAWSCredentials = BasicAWSCredentials("foo", "bar")
         private const val region = "region"
         private const val port = 7979
-        private const val accountId = 123456789L
+        private const val accountId = "123456789"
 
         @JvmStatic
         @BeforeAll
diff --git a/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/core/actor/dispatcher/MessageFactoryTest.kt b/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/core/actor/dispatcher/MessageFactoryTest.kt
index 592c291..f74672c 100644
--- a/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/core/actor/dispatcher/MessageFactoryTest.kt
+++ b/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/core/actor/dispatcher/MessageFactoryTest.kt
@@ -12,7 +12,7 @@ import org.junit.jupiter.api.TestInstance
 
 @TestInstance(TestInstance.Lifecycle.PER_METHOD)
 internal class MessageFactoryTest {
-    private val config = BonsaiSnsConfig(1234, "region", 123456789)
+    private val config = BonsaiSnsConfig(1234, "region", "123456789")
     private val subscription = mockk<Subscription>()
     private lateinit var messageFactory: MessageFactory
 
diff --git a/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/core/manager/SubscriptionManagerTest.kt b/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/core/manager/SubscriptionManagerTest.kt
index a1ccae9..54f8ab8 100644
--- a/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/core/manager/SubscriptionManagerTest.kt
+++ b/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/core/manager/SubscriptionManagerTest.kt
@@ -20,7 +20,7 @@ import org.junit.jupiter.api.assertThrows
 
 @TestInstance(TestInstance.Lifecycle.PER_METHOD)
 internal class SubscriptionManagerTest {
-    private val config = BonsaiSnsConfig(1234, "region", 123456789)
+    private val config = BonsaiSnsConfig(1234, "region", "123456789")
     private val snsOpActor = snsOpsActor()
     private val subscriptionManager = SubscriptionManager(snsOpActor, config)
 
diff --git a/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/core/manager/TopicManagerTest.kt b/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/core/manager/TopicManagerTest.kt
index 421ee6e..99a4bf4 100644
--- a/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/core/manager/TopicManagerTest.kt
+++ b/src/test/kotlin/io/github/gilbertojrequena/bonsai_sns/core/manager/TopicManagerTest.kt
@@ -12,7 +12,7 @@ import org.junit.jupiter.api.assertThrows
 
 @TestInstance(TestInstance.Lifecycle.PER_METHOD)
 internal class TopicManagerTest {
-    private val config = BonsaiSnsConfig(1234, "region", 123456789)
+    private val config = BonsaiSnsConfig(1234, "region", "123456789")
     private val topicManager = TopicManager(snsOpsActor(), config)
 
     @Test