diff --git a/CHANGELOG.md b/CHANGELOG.md
index 766fdf627..c32e5d180 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CHANGELOG
 
-## Next Release
+## v6.6.0 (2024-07-16)
 
 - Add new `SmartRate` service for interacting with the SmartRate API
     - New `RecommendShipDateForShipment` function to recommend ship date for a shipment based on a desired delivery date.
diff --git a/EasyPost.nuspec b/EasyPost.nuspec
index 5e13abea1..219fc6370 100644
--- a/EasyPost.nuspec
+++ b/EasyPost.nuspec
@@ -3,7 +3,7 @@
     <metadata>
         <id>EasyPost-Official</id>
         <title>EasyPost (Official)</title>
-        <version>6.5.2</version>
+        <version>6.6.0</version>
         <authors>EasyPost</authors>
         <owners>EasyPost</owners>
         <projectUrl>https://www.easypost.com</projectUrl>
diff --git a/EasyPost/Properties/VersionInfo.cs b/EasyPost/Properties/VersionInfo.cs
index f984fcb33..5009de6c6 100644
--- a/EasyPost/Properties/VersionInfo.cs
+++ b/EasyPost/Properties/VersionInfo.cs
@@ -2,6 +2,6 @@
 
 // Version information for an assembly must follow semantic versioning
 // When releasing a release candidate, append a 4th digit being the number of the release candidate
-[assembly: AssemblyVersion("6.5.2")]
-[assembly: AssemblyFileVersion("6.5.2")]
-[assembly: AssemblyInformationalVersion("6.5.2")]
+[assembly: AssemblyVersion("6.6.0")]
+[assembly: AssemblyFileVersion("6.6.0")]
+[assembly: AssemblyInformationalVersion("6.6.0")]