diff --git a/Directory.Build.props b/Directory.Build.props
index 1639a01a..be877e77 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,7 +1,7 @@
 <Project>
 
   <PropertyGroup>
-    <LangVersion>9.0</LangVersion>
+    <LangVersion>12.0</LangVersion>
     <Features>strict</Features>
     <Nullable>enable</Nullable>
   </PropertyGroup>