diff --git a/CryptoExchange.Net/CryptoExchange.Net.csproj b/CryptoExchange.Net/CryptoExchange.Net.csproj
index 223648c8..8de8c389 100644
--- a/CryptoExchange.Net/CryptoExchange.Net.csproj
+++ b/CryptoExchange.Net/CryptoExchange.Net.csproj
@@ -6,9 +6,9 @@
     <PackageId>CryptoExchange.Net</PackageId>
     <Authors>JKorf</Authors>
     <Description>CryptoExchange.Net is a base library which is used to implement different cryptocurrency (exchange) API's. It provides a standardized way of implementing different API's, which results in a very similar experience for users of the API implementations.</Description>
-    <PackageVersion>12.1.0</PackageVersion>
-    <AssemblyVersion>12.1.0</AssemblyVersion>
-    <FileVersion>12.1.0</FileVersion>
+    <PackageVersion>12.1.1</PackageVersion>
+    <AssemblyVersion>12.1.1</AssemblyVersion>
+    <FileVersion>12.1.1</FileVersion>
     <PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>
     <PackageTags>OKX;OKX.Net;Mexc;Mexc.Net;Kucoin;Kucoin.Net;Kraken;Kraken.Net;Huobi;Huobi.Net;CoinEx;CoinEx.Net;Bybit;Bybit.Net;Bitget;Bitget.Net;Bitfinex;Bitfinex.Net;Binance;Binance.Net;CryptoCurrency;CryptoCurrency Exchange;CryptoExchange.Net</PackageTags>
     <RepositoryType>git</RepositoryType>
diff --git a/README.md b/README.md
index 434acceb..1657d49b 100644
--- a/README.md
+++ b/README.md
@@ -127,6 +127,9 @@ Various:
   * PlatformInfo now required support environment names in the constructor
 
 ## Release notes
+* Version 12.1.1 - 11 Jul 2026
+    * Added timestamp deserialization support for yyyy-MM-dd HH:mm:ss.ffffff+00:00:00
+
 * Version 12.1.0 - 09 Jul 2026
     * Added ExchangeParameters parameter to KlineTracker, TradeTracker and ITrackerFactory methods
     * Updated some testing logic