diff --git a/Alpaca.Markets/Alpaca.Markets.csproj b/Alpaca.Markets/Alpaca.Markets.csproj
index 22550155..1778441e 100644
--- a/Alpaca.Markets/Alpaca.Markets.csproj
+++ b/Alpaca.Markets/Alpaca.Markets.csproj
@@ -12,14 +12,14 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <AssemblyVersion>7.0.4.0</AssemblyVersion>
-    <FileVersion>7.0.4.0</FileVersion>
-    <Version>7.0.4</Version>
+    <AssemblyVersion>7.0.5.0</AssemblyVersion>
+    <FileVersion>7.0.5.0</FileVersion>
+    <Version>7.0.5</Version>
   </PropertyGroup>
 
   <PropertyGroup>
     <PackageReleaseNotes>
-= The implementation of the `IAuction.Closings` and `IAuction.Openings` properties were marked as optional.
+- The new enum value `AssetClass.UsOption` was added for supporting option contracts in the assets response.
     </PackageReleaseNotes>
     <Description>C# SDK for Alpaca Trade API https://docs.alpaca.markets/</Description>
     <RepositoryUrl>https://github.com/alpacahq/alpaca-trade-api-csharp</RepositoryUrl>
diff --git a/Alpaca.Markets/Enums/AssetClass.cs b/Alpaca.Markets/Enums/AssetClass.cs
index 9babd4e5..b55bad92 100644
--- a/Alpaca.Markets/Enums/AssetClass.cs
+++ b/Alpaca.Markets/Enums/AssetClass.cs
@@ -18,5 +18,12 @@ public enum AssetClass
     /// </summary>
     [UsedImplicitly]
     [EnumMember(Value = "crypto")]
-    Crypto
+    Crypto,
+
+    /// <summary>
+    /// US option asset class.
+    /// </summary>
+    [UsedImplicitly]
+    [EnumMember(Value = "us_option")]
+    UsOption
 }
diff --git a/Alpaca.Markets/Helpers/OpenClose.cs b/Alpaca.Markets/Helpers/OpenClose.cs
index 3d1862ec..058b4256 100644
--- a/Alpaca.Markets/Helpers/OpenClose.cs
+++ b/Alpaca.Markets/Helpers/OpenClose.cs
@@ -32,11 +32,13 @@ internal OpenClose(
     /// <summary>
     /// Gets open time in EST time zone.
     /// </summary>
+    // ReSharper disable once AutoPropertyCanBeMadeGetOnly.Global
     public DateTimeOffset OpenEst { get; init; }
 
     /// <summary>
     /// Gets close time in EST time zone.
     /// </summary>
+    // ReSharper disable once AutoPropertyCanBeMadeGetOnly.Global
     public DateTimeOffset CloseEst { get; init; }
 
     /// <summary>
diff --git a/Alpaca.Markets/PublicAPI.Shipped.txt b/Alpaca.Markets/PublicAPI.Shipped.txt
index 3e05b9f2..8a672318 100644
--- a/Alpaca.Markets/PublicAPI.Shipped.txt
+++ b/Alpaca.Markets/PublicAPI.Shipped.txt
@@ -129,6 +129,7 @@ Alpaca.Markets.AssetAttributes.Unknown = 0 -> Alpaca.Markets.AssetAttributes
 Alpaca.Markets.AssetClass
 Alpaca.Markets.AssetClass.Crypto = 1 -> Alpaca.Markets.AssetClass
 Alpaca.Markets.AssetClass.UsEquity = 0 -> Alpaca.Markets.AssetClass
+Alpaca.Markets.AssetClass.UsOption = 2 -> Alpaca.Markets.AssetClass
 Alpaca.Markets.AssetsRequest
 Alpaca.Markets.AssetsRequest.Attributes.get -> System.Collections.Generic.ISet<Alpaca.Markets.AssetAttributes>!
 Alpaca.Markets.AssetsRequest.AssetClass.get -> Alpaca.Markets.AssetClass?