diff --git a/pom.xml b/pom.xml
index 991b4ec3b..5e87d690d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -2,7 +2,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.twitter4j</groupId>
     <artifactId>twitter4j</artifactId>
-    <version>3.1.0-SNAPSHOT</version>
+    <version>4.0.0</version>
     <packaging>pom</packaging>
     <name>twitter4j</name>
     <description>A Java library for the Twitter API</description>
diff --git a/twitter4j-appengine/pom.xml b/twitter4j-appengine/pom.xml
index 341c7308f..12d5ef587 100644
--- a/twitter4j-appengine/pom.xml
+++ b/twitter4j-appengine/pom.xml
@@ -1,10 +1,9 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>org.twitter4j</groupId>
     <artifactId>twitter4j-appengine</artifactId>
-    <version>3.1.0-SNAPSHOT</version>
+    <version>4.0.0</version>
     <packaging>jar</packaging>
     <name>twitter4j-appengine</name>
     <description>A Java library for the Twitter API</description>
@@ -97,7 +96,7 @@
         <dependency>
             <groupId>org.twitter4j</groupId>
             <artifactId>twitter4j-core</artifactId>
-            <version>3.1.0-SNAPSHOT</version>
+            <version>4.0.0</version>
         </dependency>
         <dependency>
             <groupId>com.google.appengine</groupId>
diff --git a/twitter4j-async/pom.xml b/twitter4j-async/pom.xml
index 2db6dc191..74db1de23 100644
--- a/twitter4j-async/pom.xml
+++ b/twitter4j-async/pom.xml
@@ -1,10 +1,9 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>org.twitter4j</groupId>
     <artifactId>twitter4j-async</artifactId>
-    <version>3.1.0-SNAPSHOT</version>
+    <version>4.0.0</version>
     <packaging>jar</packaging>
     <name>twitter4j-async</name>
     <description>A Java library for the Twitter API</description>
@@ -97,7 +96,7 @@
         <dependency>
             <groupId>org.twitter4j</groupId>
             <artifactId>twitter4j-core</artifactId>
-            <version>3.1.0-SNAPSHOT</version>
+            <version>4.0.0</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
diff --git a/twitter4j-core/pom.xml b/twitter4j-core/pom.xml
index 59af0350a..96d8a16ea 100644
--- a/twitter4j-core/pom.xml
+++ b/twitter4j-core/pom.xml
@@ -1,10 +1,9 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>org.twitter4j</groupId>
     <artifactId>twitter4j-core</artifactId>
-    <version>3.1.0-SNAPSHOT</version>
+    <version>4.0.0</version>
     <packaging>jar</packaging>
     <name>twitter4j-core</name>
     <description>A Java library for the Twitter API</description>
diff --git a/twitter4j-examples/pom.xml b/twitter4j-examples/pom.xml
index 1f8b67370..80f6b2338 100644
--- a/twitter4j-examples/pom.xml
+++ b/twitter4j-examples/pom.xml
@@ -1,10 +1,9 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>org.twitter4j</groupId>
     <artifactId>twitter4j-examples</artifactId>
-    <version>3.1.0-SNAPSHOT</version>
+    <version>4.0.0</version>
     <packaging>jar</packaging>
     <name>twitter4j-examples</name>
     <description>A Java library for the Twitter API</description>
@@ -97,22 +96,22 @@
         <dependency>
             <groupId>org.twitter4j</groupId>
             <artifactId>twitter4j-core</artifactId>
-            <version>3.1.0-SNAPSHOT</version>
+            <version>4.0.0</version>
         </dependency>
         <dependency>
             <groupId>org.twitter4j</groupId>
             <artifactId>twitter4j-async</artifactId>
-            <version>3.1.0-SNAPSHOT</version>
+            <version>4.0.0</version>
         </dependency>
         <dependency>
             <groupId>org.twitter4j</groupId>
             <artifactId>twitter4j-stream</artifactId>
-            <version>3.1.0-SNAPSHOT</version>
+            <version>4.0.0</version>
         </dependency>
         <dependency>
             <groupId>org.twitter4j</groupId>
             <artifactId>twitter4j-media-support</artifactId>
-            <version>3.1.0-SNAPSHOT</version>
+            <version>4.0.0</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
diff --git a/twitter4j-media-support/pom.xml b/twitter4j-media-support/pom.xml
index cdc34c0f8..82c23d208 100644
--- a/twitter4j-media-support/pom.xml
+++ b/twitter4j-media-support/pom.xml
@@ -1,10 +1,9 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>org.twitter4j</groupId>
     <artifactId>twitter4j-media-support</artifactId>
-    <version>3.1.0-SNAPSHOT</version>
+    <version>4.0.0</version>
     <packaging>jar</packaging>
     <name>twitter4j-media-support</name>
     <description>Twitter4J optional component adds multimedia support
@@ -98,7 +97,7 @@
         <dependency>
             <groupId>org.twitter4j</groupId>
             <artifactId>twitter4j-core</artifactId>
-            <version>3.1.0-SNAPSHOT</version>
+            <version>4.0.0</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
diff --git a/twitter4j-spdy-support/pom.xml b/twitter4j-spdy-support/pom.xml
index 22ddaced6..fee7aad91 100644
--- a/twitter4j-spdy-support/pom.xml
+++ b/twitter4j-spdy-support/pom.xml
@@ -1,10 +1,9 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>org.twitter4j</groupId>
     <artifactId>twitter4j-spdy-support</artifactId>
-    <version>3.1.0-SNAPSHOT</version>
+    <version>4.0.0</version>
     <packaging>jar</packaging>
     <name>twitter4j-spdy-support</name>
     <description>A Java library for the Twitter API</description>
@@ -97,7 +96,7 @@
         <dependency>
             <groupId>org.twitter4j</groupId>
             <artifactId>twitter4j-core</artifactId>
-            <version>3.1.0-SNAPSHOT</version>
+            <version>4.0.0</version>
         </dependency>
         <dependency>
             <groupId>com.squareup.okhttp</groupId>
diff --git a/twitter4j-stream/pom.xml b/twitter4j-stream/pom.xml
index 26468cd6a..69f857376 100644
--- a/twitter4j-stream/pom.xml
+++ b/twitter4j-stream/pom.xml
@@ -3,7 +3,7 @@
 
     <groupId>org.twitter4j</groupId>
     <artifactId>twitter4j-stream</artifactId>
-    <version>3.1.0-SNAPSHOT</version>
+    <version>4.0.0</version>
     <packaging>jar</packaging>
     <name>twitter4j-stream</name>
     <description>A Java library for the Twitter API</description>
@@ -96,12 +96,12 @@
         <dependency>
             <groupId>org.twitter4j</groupId>
             <artifactId>twitter4j-core</artifactId>
-            <version>3.1.0-SNAPSHOT</version>
+            <version>4.0.0</version>
         </dependency>
         <dependency>
             <groupId>org.twitter4j</groupId>
             <artifactId>twitter4j-async</artifactId>
-            <version>3.1.0-SNAPSHOT</version>
+            <version>4.0.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>