diff --git a/CHANGELOG.md b/CHANGELOG.md
index 182f9a01c..ade0c1784 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # CHANGELOG
 
+## v5.5.0 (2023-08-29)
+
+- Add custom parameter sets (`CreateFedEx`, `CreateUps`) for carrier account creation API calls
+  - Users required to use these parameter sets if creating a FedEx or UPS account
+
 ## v5.4.1 (2023-08-17)
 
 - Fix incorrect JSON mapping for `EasyPostEstimatedDeliveryDate`
diff --git a/EasyPost.nuspec b/EasyPost.nuspec
index b05e8b287..178793370 100644
--- a/EasyPost.nuspec
+++ b/EasyPost.nuspec
@@ -3,7 +3,7 @@
     <metadata>
         <id>EasyPost-Official</id>
         <title>EasyPost (Official)</title>
-        <version>5.4.1</version>
+        <version>5.5.0</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 8ec5802fe..cb00bc913 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("5.4.1")]
-[assembly: AssemblyFileVersion("5.4.1")]
-[assembly: AssemblyInformationalVersion("5.4.1")]
+[assembly: AssemblyVersion("5.5.0")]
+[assembly: AssemblyFileVersion("5.5.0")]
+[assembly: AssemblyInformationalVersion("5.5.0")]