diff --git a/CHANGELOG.md b/CHANGELOG.md
index 909b061..5e92e93 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased][unreleased]
 
++## [4.0.0] — 2016-12-21
+
 ### Added
 
 - Add support for a streaming reading of delimited data files.
@@ -88,7 +90,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 - Initial public release.
 
-[unreleased]: https://github.com/EnableSoftware/DelimitedDataParser/compare/v3.3.2...HEAD
+[unreleased]: https://github.com/EnableSoftware/DelimitedDataParser/compare/v4.0.0...HEAD
+[4.0.0]: https://github.com/EnableSoftware/DelimitedDataParser/compare/v3.3.2...v4.0.0
 [3.3.2]: https://github.com/EnableSoftware/DelimitedDataParser/compare/v3.3.1...v3.3.2
 [3.3.1]: https://github.com/EnableSoftware/DelimitedDataParser/compare/v3.2.0...v3.3.1
 [3.2.0]: https://github.com/EnableSoftware/DelimitedDataParser/compare/v3.1.0...v3.2.0
diff --git a/nuget/DelimitedDataParser.nuspec b/nuget/DelimitedDataParser.nuspec
index df8c5ff..82fb099 100644
--- a/nuget/DelimitedDataParser.nuspec
+++ b/nuget/DelimitedDataParser.nuspec
@@ -2,7 +2,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2011/08/nuspec.xsd">
     <metadata>
         <id>DelimitedDataParser</id>
-        <version>3.3.2</version>
+        <version>4.0.0</version>
         <authors>Enable</authors>
         <owners>Enable</owners>
         <licenseUrl>https://raw.githubusercontent.com/EnableSoftware/DelimitedDataParser/master/LICENSE</licenseUrl>
@@ -11,8 +11,6 @@
         <requireLicenseAcceptance>false</requireLicenseAcceptance>
         <description>C# library for parsing and exporting tabular data in delimited format (e.g. CSV).</description>
         <summary />
-        <releaseNotes>http://enable.com/ 
-https://github.com/EnableSoftware/DelimitedDataParser/releases/tag/v3.3.2</releaseNotes>
         <copyright>Copyright 2016</copyright>
         <tags>CSV parser exporter delimited</tags>
     </metadata>
diff --git a/src/DelimitedDataParser/Properties/AssemblyInfo.cs b/src/DelimitedDataParser/Properties/AssemblyInfo.cs
index 5201ebe..7ddee3a 100644
--- a/src/DelimitedDataParser/Properties/AssemblyInfo.cs
+++ b/src/DelimitedDataParser/Properties/AssemblyInfo.cs
@@ -8,4 +8,4 @@
 [assembly: ComVisible(false)]
 [assembly: CLSCompliant(true)]
 [assembly: InternalsVisibleTo("DelimitedDataParser.Test")]
-[assembly: AssemblyVersion("3.3.*")]
+[assembly: AssemblyVersion("4.0.*")]
diff --git a/test/DelimitedDataParser.Test/Properties/AssemblyInfo.cs b/test/DelimitedDataParser.Test/Properties/AssemblyInfo.cs
index 51d6551..f9b3399 100644
--- a/test/DelimitedDataParser.Test/Properties/AssemblyInfo.cs
+++ b/test/DelimitedDataParser.Test/Properties/AssemblyInfo.cs
@@ -5,4 +5,4 @@
 [assembly: AssemblyTitle("Delimited Data Parser Tests")]
 [assembly: AssemblyProduct("Delimited Data Parser")]
 [assembly: ComVisible(false)]
-[assembly: AssemblyVersion("3.3.*")]
+[assembly: AssemblyVersion("4.0.*")]