diff --git a/Mexc.Net/Mexc.Net.csproj b/Mexc.Net/Mexc.Net.csproj
index db18f61..f8e9308 100644
--- a/Mexc.Net/Mexc.Net.csproj
+++ b/Mexc.Net/Mexc.Net.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1</TargetFrameworks>
-    <LangVersion>11.0</LangVersion>
+    <LangVersion>10.0</LangVersion>
     <Nullable>enable</Nullable>
   </PropertyGroup>
   <PropertyGroup>