diff --git a/PochtaSdk/PochtaSdk.csproj b/PochtaSdk/PochtaSdk.csproj
index 533c6ba..942389f 100644
--- a/PochtaSdk/PochtaSdk.csproj
+++ b/PochtaSdk/PochtaSdk.csproj
@@ -24,6 +24,9 @@
     <SymbolPackageFormat>snupkg</SymbolPackageFormat>
     <PackageReleaseNotes>Beta release. What's new:
 
+    v0.15
+    — Added simple TrackingClient for mail tracking API.
+
     v0.14
     — Improved OtpravkaClient error reporting, added more display names to enum members.
 
diff --git a/README.md b/README.md
index 9f6b91d..d5124a5 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ This is a beta version that covers basic API features.
 * Add the Nuget package: https://www.nuget.org/packages/PochtaSdk
 * Use `TariffClient` class to calculate delivery tariffs and terms
 * Use `OtpravkaClient` class to register packages (requires authentication)
+* Use `TrackingClient` class for mail tracking (requires authentication)
 
 ## Sample usage
 
@@ -99,6 +100,10 @@ Documentation: https://otpravka.pochta.ru/specification
   * SearchPostOffices [services-postoffice-settlement.offices.codes](https://otpravka.pochta.ru/specification#/services-postoffice-settlement.offices.codes)
   * DownloadPostOffices [postoffice_passport-unload_passport](https://otpravka.pochta.ru/specification#/postoffice_passport-unload_passport)
 
+## Tracking API support
+
+* GetOperationHistory
+
 ## Trace log
 
 A typical trace log looks like this: