diff --git a/lib/as3/gradle.properties b/lib/as3/gradle.properties
index 8c8755e..02d5eef 100644
--- a/lib/as3/gradle.properties
+++ b/lib/as3/gradle.properties
@@ -1,7 +1,7 @@
 # This file is shared currently between this Gradle build and the
 # Ant builds for fd303 and JavaScript. Keep the dotted notation for
 # the properties to minimize the changes in the dependencies.
-thrift.version=1.0.0
+thrift.version=0.13.0
 thrift.groupid=org.apache.thrift
 release=false
 sign=false
diff --git a/lib/csharp/ThriftMSBuildTask/Properties/AssemblyInfo.cs b/lib/csharp/ThriftMSBuildTask/Properties/AssemblyInfo.cs
index c741b72..6e99dd9 100644
--- a/lib/csharp/ThriftMSBuildTask/Properties/AssemblyInfo.cs
+++ b/lib/csharp/ThriftMSBuildTask/Properties/AssemblyInfo.cs
@@ -56,5 +56,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.0.*")]
-[assembly: AssemblyFileVersion("1.0.0.*")]
+[assembly: AssemblyVersion("0.13.0.*")]
+[assembly: AssemblyFileVersion("0.13.0.*")]
diff --git a/lib/csharp/ThriftMSBuildTask/ThriftMSBuildTask.csproj b/lib/csharp/ThriftMSBuildTask/ThriftMSBuildTask.csproj
index a319df2..f4a26de 100644
--- a/lib/csharp/ThriftMSBuildTask/ThriftMSBuildTask.csproj
+++ b/lib/csharp/ThriftMSBuildTask/ThriftMSBuildTask.csproj
@@ -45,7 +45,7 @@
     <UpdateRequired>false</UpdateRequired>
     <MapFileExtensions>true</MapFileExtensions>
     <ApplicationRevision>0</ApplicationRevision>
-    <ApplicationVersion>1.0.0.0</ApplicationVersion>
+    <ApplicationVersion>0.13.0.0</ApplicationVersion>
     <IsWebBootstrapper>false</IsWebBootstrapper>
     <UseApplicationTrust>false</UseApplicationTrust>
     <BootstrapperEnabled>true</BootstrapperEnabled>
diff --git a/lib/csharp/src/Properties/AssemblyInfo.cs b/lib/csharp/src/Properties/AssemblyInfo.cs
index 7e86781..ace0310 100644
--- a/lib/csharp/src/Properties/AssemblyInfo.cs
+++ b/lib/csharp/src/Properties/AssemblyInfo.cs
@@ -51,5 +51,5 @@
 //
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
-[assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion("0.13.0.0")]
+[assembly: AssemblyFileVersion("0.13.0.0")]
diff --git a/lib/csharp/src/Thrift.csproj b/lib/csharp/src/Thrift.csproj
index bf65569..0a1552f 100644
--- a/lib/csharp/src/Thrift.csproj
+++ b/lib/csharp/src/Thrift.csproj
@@ -45,7 +45,7 @@
     <UpdateRequired>false</UpdateRequired>
     <MapFileExtensions>true</MapFileExtensions>
     <ApplicationRevision>0</ApplicationRevision>
-    <ApplicationVersion>1.0.0.0</ApplicationVersion>
+    <ApplicationVersion>0.13.0.0</ApplicationVersion>
     <IsWebBootstrapper>false</IsWebBootstrapper>
     <UseApplicationTrust>false</UseApplicationTrust>
     <BootstrapperEnabled>true</BootstrapperEnabled>
diff --git a/lib/csharp/test/Multiplex/Client/MultiplexClient.csproj b/lib/csharp/test/Multiplex/Client/MultiplexClient.csproj
index 21e1ce1..09d20f5 100644
--- a/lib/csharp/test/Multiplex/Client/MultiplexClient.csproj
+++ b/lib/csharp/test/Multiplex/Client/MultiplexClient.csproj
@@ -46,7 +46,7 @@
     <UpdateRequired>false</UpdateRequired>
     <MapFileExtensions>true</MapFileExtensions>
     <ApplicationRevision>0</ApplicationRevision>
-    <ApplicationVersion>1.0.0.0</ApplicationVersion>
+    <ApplicationVersion>0.13.0.0</ApplicationVersion>
     <UseApplicationTrust>false</UseApplicationTrust>
     <BootstrapperEnabled>true</BootstrapperEnabled>
   </PropertyGroup>
diff --git a/lib/csharp/test/Multiplex/Client/Properties/AssemblyInfo.cs b/lib/csharp/test/Multiplex/Client/Properties/AssemblyInfo.cs
index f686ded..0b65c1e 100644
--- a/lib/csharp/test/Multiplex/Client/Properties/AssemblyInfo.cs
+++ b/lib/csharp/test/Multiplex/Client/Properties/AssemblyInfo.cs
@@ -51,5 +51,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion("0.13.0.0")]
+[assembly: AssemblyFileVersion("0.13.0.0")]
diff --git a/lib/csharp/test/Multiplex/Server/MultiplexServer.csproj b/lib/csharp/test/Multiplex/Server/MultiplexServer.csproj
index c4a4394..23d3253 100644
--- a/lib/csharp/test/Multiplex/Server/MultiplexServer.csproj
+++ b/lib/csharp/test/Multiplex/Server/MultiplexServer.csproj
@@ -46,7 +46,7 @@
     <UpdateRequired>false</UpdateRequired>
     <MapFileExtensions>true</MapFileExtensions>
     <ApplicationRevision>0</ApplicationRevision>
-    <ApplicationVersion>1.0.0.0</ApplicationVersion>
+    <ApplicationVersion>0.13.0.0</ApplicationVersion>
     <UseApplicationTrust>false</UseApplicationTrust>
     <BootstrapperEnabled>true</BootstrapperEnabled>
   </PropertyGroup>
diff --git a/lib/csharp/test/Multiplex/Server/Properties/AssemblyInfo.cs b/lib/csharp/test/Multiplex/Server/Properties/AssemblyInfo.cs
index 5d40546..2b8a6af 100644
--- a/lib/csharp/test/Multiplex/Server/Properties/AssemblyInfo.cs
+++ b/lib/csharp/test/Multiplex/Server/Properties/AssemblyInfo.cs
@@ -51,5 +51,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion("0.13.0.0")]
+[assembly: AssemblyFileVersion("0.13.0.0")]
diff --git a/lib/csharp/test/ThriftMVCTest/Properties/AssemblyInfo.cs b/lib/csharp/test/ThriftMVCTest/Properties/AssemblyInfo.cs
index cfe8894..b812aaf 100644
--- a/lib/csharp/test/ThriftMVCTest/Properties/AssemblyInfo.cs
+++ b/lib/csharp/test/ThriftMVCTest/Properties/AssemblyInfo.cs
@@ -49,5 +49,5 @@
 //
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
-[assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion("0.13.0.0")]
+[assembly: AssemblyFileVersion("0.13.0.0")]
diff --git a/lib/d/src/thrift/base.d b/lib/d/src/thrift/base.d
index d5ece73..150c3da 100644
--- a/lib/d/src/thrift/base.d
+++ b/lib/d/src/thrift/base.d
@@ -50,7 +50,7 @@
 /// The Thrift version string, used for informative purposes.
 // Note: This is currently hardcoded, but will likely be filled in by the build
 // system in future versions.
-enum VERSION = "1.0.0";
+enum VERSION = "0.13.0";
 
 /**
  * Functions used for logging inside Thrift.
diff --git a/lib/dart/pubspec.yaml b/lib/dart/pubspec.yaml
index ded0269..f406b99 100644
--- a/lib/dart/pubspec.yaml
+++ b/lib/dart/pubspec.yaml
@@ -16,7 +16,7 @@
 # under the License.
 
 name: thrift
-version: 1.0.0
+version: 0.13.0
 description: >
   A Dart library for Apache Thrift
 author: Apache Thrift Developers <dev@thrift.apache.org>
diff --git a/lib/delphi/src/Thrift.pas b/lib/delphi/src/Thrift.pas
index 62481e7..2ee8344 100644
--- a/lib/delphi/src/Thrift.pas
+++ b/lib/delphi/src/Thrift.pas
@@ -27,7 +27,7 @@
   Thrift.Protocol;
 
 const
-  Version = '1.0.0';
+  Version = '0.13.0';
 
 type
   TException = Thrift.Exception.TException; // compatibility alias
diff --git a/lib/erl/src/thrift.app.src b/lib/erl/src/thrift.app.src
index b3b225f..e5e6ed5 100644
--- a/lib/erl/src/thrift.app.src
+++ b/lib/erl/src/thrift.app.src
@@ -22,7 +22,7 @@
   {description, "Thrift bindings"},
 
   % The version of the applicaton
-  {vsn, "1.0.0"},
+  {vsn, "0.13.0"},
 
   % All modules used by the application.
   {modules, [
diff --git a/lib/haxe/haxelib.json b/lib/haxe/haxelib.json
index 992ad90..b3c1530 100644
--- a/lib/haxe/haxelib.json
+++ b/lib/haxe/haxelib.json
@@ -4,7 +4,7 @@
 	"license": "Apache",
 	"tags": ["thrift", "rpc", "serialization", "cross", "framework"],
 	"description": "Haxe bindings for the Apache Thrift RPC and serialization framework",
-	"version": "1.0.0",
+	"version": "0.13.0",
 	"releasenote": "Licensed under Apache License, Version 2.0. The Apache Thrift compiler needs to be installed separately.",
 	"contributors": ["Apache Software Foundation (ASF)"],
 	"dependencies": { },
diff --git a/lib/hs/thrift.cabal b/lib/hs/thrift.cabal
index 5515556..84a59ac 100644
--- a/lib/hs/thrift.cabal
+++ b/lib/hs/thrift.cabal
@@ -18,7 +18,7 @@
 --
 
 Name:           thrift
-Version:        1.0.0
+Version:        0.13.0
 Cabal-Version:  1.24
 License:        OtherLicense
 Category:       Foreign
diff --git a/lib/java/gradle.properties b/lib/java/gradle.properties
index 5525610..a964675 100644
--- a/lib/java/gradle.properties
+++ b/lib/java/gradle.properties
@@ -1,7 +1,7 @@
 # This file is shared currently between this Gradle build and the
 # Ant builds for fd303 and JavaScript. Keep the dotted notation for
 # the properties to minimize the changes in the dependencies.
-thrift.version=1.0.0
+thrift.version=0.13.0
 thrift.groupid=org.apache.thrift
 release=false
 
diff --git a/lib/js/package-lock.json b/lib/js/package-lock.json
index 19710df..7c8374f 100644
--- a/lib/js/package-lock.json
+++ b/lib/js/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "thrift",
-  "version": "1.0.0",
+  "version": "0.13.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/lib/js/package.json b/lib/js/package.json
index a35ac15..b5c0238 100644
--- a/lib/js/package.json
+++ b/lib/js/package.json
@@ -1,6 +1,15 @@
 {
   "name": "thrift",
-  "version": "1.0.0",
+  "version": "0.13.0",
+  "description": "Thrift is a software framework for scalable cross-language services development.",
+  "author": {
+    "name": "Apache Thrift Developers",
+    "email": "dev@thrift.apache.org"
+  },
+  "bugs": "https://issues.apache.org/jira/projects/THRIFT/summary",
+  "homepage": "http://thrift.apache.org",
+  "repository": "https://github.com/apache/thrift",
+  "license": "Apache-2.0",
   "devDependencies": {
     "browserify": "^16.2.3",
     "grunt": "^1.0.2",
diff --git a/lib/js/src/thrift.js b/lib/js/src/thrift.js
index b9fa62d..0b4a292 100644
--- a/lib/js/src/thrift.js
+++ b/lib/js/src/thrift.js
@@ -46,7 +46,7 @@
      * @const {string} Version
      * @memberof Thrift
      */
-    Version: '1.0.0',
+    Version: '0.13.0',
 
     /**
      * Thrift IDL type string to Id mapping.
diff --git a/lib/lua/Thrift.lua b/lib/lua/Thrift.lua
index 68d4ba8..a948b3d 100644
--- a/lib/lua/Thrift.lua
+++ b/lib/lua/Thrift.lua
@@ -48,7 +48,7 @@
   return count
 end
 
-version = '1.0.0'
+version = '0.13.0'
 
 TType = {
   STOP   = 0,
diff --git a/lib/netcore/Thrift/Properties/AssemblyInfo.cs b/lib/netcore/Thrift/Properties/AssemblyInfo.cs
index 8341723..0f433b6 100644
--- a/lib/netcore/Thrift/Properties/AssemblyInfo.cs
+++ b/lib/netcore/Thrift/Properties/AssemblyInfo.cs
@@ -52,5 +52,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 
-[assembly: AssemblyVersion("1.0.0.0")]
-[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: AssemblyVersion("0.13.0.0")]
+[assembly: AssemblyFileVersion("0.13.0.0")]
diff --git a/lib/netcore/Thrift/Transports/Client/THttpClientTransport.cs b/lib/netcore/Thrift/Transports/Client/THttpClientTransport.cs
index 797d380..949bee7 100644
--- a/lib/netcore/Thrift/Transports/Client/THttpClientTransport.cs
+++ b/lib/netcore/Thrift/Transports/Client/THttpClientTransport.cs
@@ -149,7 +149,7 @@
             }
 
             httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/x-thrift"));
-            httpClient.DefaultRequestHeaders.UserAgent.Add(new ProductInfoHeaderValue("THttpClientTransport", "1.0.0"));
+            httpClient.DefaultRequestHeaders.UserAgent.Add(new ProductInfoHeaderValue("THttpClientTransport", "0.13.0"));
 
             if (CustomHeaders != null)
             {
diff --git a/lib/ocaml/_oasis b/lib/ocaml/_oasis
index 5ad90df..83566aa 100644
--- a/lib/ocaml/_oasis
+++ b/lib/ocaml/_oasis
@@ -1,5 +1,5 @@
 Name: libthrift-ocaml
-Version: 1.0.0
+Version: 0.13.0
 OASISFormat: 0.3
 Synopsis: OCaml bindings for the Apache Thrift RPC system
 Authors: Apache Thrift Developers <dev@thrift.apache.org>
diff --git a/lib/perl/lib/Thrift.pm b/lib/perl/lib/Thrift.pm
index ab40930..01985ea 100644
--- a/lib/perl/lib/Thrift.pm
+++ b/lib/perl/lib/Thrift.pm
@@ -31,6 +31,6 @@
 #
 
 package Thrift;
-use version 0.77; our $VERSION = version->declare("v1.0.0");
+use version 0.77; our $VERSION = version->declare("v0.13.0");
 
 1;
diff --git a/lib/py/setup.py b/lib/py/setup.py
index 3cf1469..2ba2691 100644
--- a/lib/py/setup.py
+++ b/lib/py/setup.py
@@ -90,7 +90,7 @@
     twisted_deps = ['twisted']
 
     setup(name='thrift',
-          version='1.0.0',
+          version='0.13.0',
           description='Python bindings for the Apache Thrift RPC system',
           author='Apache Thrift Developers',
           author_email='dev@thrift.apache.org',
diff --git a/lib/rb/thrift.gemspec b/lib/rb/thrift.gemspec
index e53194e..869e5d9 100644
--- a/lib/rb/thrift.gemspec
+++ b/lib/rb/thrift.gemspec
@@ -3,7 +3,7 @@
 
 Gem::Specification.new do |s|
   s.name        = 'thrift'
-  s.version     = '1.0.0'
+  s.version     = '0.13.0'
   s.authors     = ['Apache Thrift Developers']
   s.email       = ['dev@thrift.apache.org']
   s.homepage    = 'http://thrift.apache.org'
diff --git a/lib/rs/Cargo.toml b/lib/rs/Cargo.toml
index ed32179..3a25b16 100644
--- a/lib/rs/Cargo.toml
+++ b/lib/rs/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "thrift"
 description = "Rust bindings for the Apache Thrift RPC system"
-version = "1.0.0"
+version = "0.13.0"
 license = "Apache-2.0"
 authors = ["Apache Thrift Developers <dev@thrift.apache.org>"]
 homepage = "http://thrift.apache.org"
diff --git a/lib/st/package.xml b/lib/st/package.xml
index f83936a..21b7adc 100644
--- a/lib/st/package.xml
+++ b/lib/st/package.xml
@@ -17,7 +17,7 @@
  specific language governing permissions and limitations
  under the License.
  -->
-<!-- Apache Thrift Smalltalk library version 1.0.0 -->
+<!-- Apache Thrift Smalltalk library version 0.13.0 -->
 <package>
   <name>libthrift-st</name>
   <file>thrift.st</file>
diff --git a/lib/swift/Sources/Thrift.swift b/lib/swift/Sources/Thrift.swift
index 4898c77..45c68f2 100644
--- a/lib/swift/Sources/Thrift.swift
+++ b/lib/swift/Sources/Thrift.swift
@@ -1,3 +1,3 @@
 class Thrift {
-	let version = "1.0.0"
+	let version = "0.13.0"
 }
diff --git a/lib/swift/Tests/ThriftTests/ThriftTests.swift b/lib/swift/Tests/ThriftTests/ThriftTests.swift
index 8f0b1fe..ae47f38 100644
--- a/lib/swift/Tests/ThriftTests/ThriftTests.swift
+++ b/lib/swift/Tests/ThriftTests/ThriftTests.swift
@@ -3,7 +3,7 @@
 
 class ThriftTests: XCTestCase {
   func testVersion() {
-    XCTAssertEqual(Thrift().version, "1.0.0")
+    XCTAssertEqual(Thrift().version, "0.13.0")
   }
 
   func test_in_addr_extension() {