diff --git a/Directory.Build.props b/Directory.Build.props
index 7364962..8042269 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <LangVersion>11.0</LangVersion>
+    <LangVersion>12.0</LangVersion>
     <Authors>prom-client-net contributors</Authors>
     <Copyright>Copyright © prom-client-net</Copyright>
     <PackageId>$(MSBuildProjectName)</PackageId>