diff --git a/README.md b/README.md
index dce6ec8..a510c37 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ This SDK current supports the following versions of CloudEvents:
 
 # sdk-csharp
 
-.NET Standard 2.0 (C#) SDK for CloudEvents
+.NET (C#) SDK for CloudEvents
 
 The `CloudNative.CloudEvents` package provides support for creating, encoding,
 decoding, sending, and receiving [CNCF
diff --git a/src/CloudNative.CloudEvents.Amqp/CloudNative.CloudEvents.Amqp.csproj b/src/CloudNative.CloudEvents.Amqp/CloudNative.CloudEvents.Amqp.csproj
index ffa214b..1c12404 100644
--- a/src/CloudNative.CloudEvents.Amqp/CloudNative.CloudEvents.Amqp.csproj
+++ b/src/CloudNative.CloudEvents.Amqp/CloudNative.CloudEvents.Amqp.csproj
@@ -3,7 +3,6 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net8.0</TargetFrameworks>
     <Description>AMQP extensions for CloudNative.CloudEvents</Description>
-    <LangVersion>10.0</LangVersion>
     <Nullable>enable</Nullable>
     <PackageTags>cncf;cloudnative;cloudevents;events;amqp</PackageTags>
   </PropertyGroup>
diff --git a/src/CloudNative.CloudEvents.AspNetCore/CloudNative.CloudEvents.AspNetCore.csproj b/src/CloudNative.CloudEvents.AspNetCore/CloudNative.CloudEvents.AspNetCore.csproj
index fa43ad4..c401d45 100644
--- a/src/CloudNative.CloudEvents.AspNetCore/CloudNative.CloudEvents.AspNetCore.csproj
+++ b/src/CloudNative.CloudEvents.AspNetCore/CloudNative.CloudEvents.AspNetCore.csproj
@@ -3,7 +3,6 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net8.0</TargetFrameworks>
     <Description>ASP.Net Core extensions for CloudNative.CloudEvents</Description>
-    <LangVersion>10.0</LangVersion>
     <Nullable>enable</Nullable>
     <PackageTags>cncf;cloudnative;cloudevents;events;aspnetcore;aspnet</PackageTags>
   </PropertyGroup>
diff --git a/src/CloudNative.CloudEvents.Avro/CloudNative.CloudEvents.Avro.csproj b/src/CloudNative.CloudEvents.Avro/CloudNative.CloudEvents.Avro.csproj
index 5c4d149..f0479f7 100644
--- a/src/CloudNative.CloudEvents.Avro/CloudNative.CloudEvents.Avro.csproj
+++ b/src/CloudNative.CloudEvents.Avro/CloudNative.CloudEvents.Avro.csproj
@@ -4,7 +4,6 @@
     <TargetFrameworks>netstandard2.0;netstandard2.1;net8.0</TargetFrameworks>
     <Description>Avro extensions for CloudNative.CloudEvents</Description>
     <PackageTags>cncf;cloudnative;cloudevents;events;avro</PackageTags>
-    <LangVersion>10.0</LangVersion>
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
diff --git a/src/CloudNative.CloudEvents.Kafka/CloudNative.CloudEvents.Kafka.csproj b/src/CloudNative.CloudEvents.Kafka/CloudNative.CloudEvents.Kafka.csproj
index f200659..e851a80 100644
--- a/src/CloudNative.CloudEvents.Kafka/CloudNative.CloudEvents.Kafka.csproj
+++ b/src/CloudNative.CloudEvents.Kafka/CloudNative.CloudEvents.Kafka.csproj
@@ -4,7 +4,6 @@
     <TargetFrameworks>netstandard2.0;netstandard2.1;net8.0</TargetFrameworks>
     <Description>Kafka extensions for CloudNative.CloudEvents</Description>
     <PackageTags>cncf;cloudnative;cloudevents;events;kafka</PackageTags>
-    <LangVersion>10.0</LangVersion>
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
diff --git a/src/CloudNative.CloudEvents.Mqtt/CloudNative.CloudEvents.Mqtt.csproj b/src/CloudNative.CloudEvents.Mqtt/CloudNative.CloudEvents.Mqtt.csproj
index 43cff5e..f3c0a31 100644
--- a/src/CloudNative.CloudEvents.Mqtt/CloudNative.CloudEvents.Mqtt.csproj
+++ b/src/CloudNative.CloudEvents.Mqtt/CloudNative.CloudEvents.Mqtt.csproj
@@ -4,7 +4,6 @@
     <TargetFrameworks>netstandard2.0;netstandard2.1;net8.0</TargetFrameworks>
     <Description>MQTT extensions for CloudNative.CloudEvents</Description>
     <PackageTags>cncf;cloudnative;cloudevents;events;mqtt</PackageTags>
-    <LangVersion>10.0</LangVersion>
     <Version>3.$(MinorVersion).$(PatchVersion)</Version>
     <PackageValidationBaselineVersion>3.$(PackageValidationMinor).0</PackageValidationBaselineVersion>
     <Nullable>enable</Nullable>
diff --git a/src/CloudNative.CloudEvents.NewtonsoftJson/CloudNative.CloudEvents.NewtonsoftJson.csproj b/src/CloudNative.CloudEvents.NewtonsoftJson/CloudNative.CloudEvents.NewtonsoftJson.csproj
index c214f02..005fb87 100644
--- a/src/CloudNative.CloudEvents.NewtonsoftJson/CloudNative.CloudEvents.NewtonsoftJson.csproj
+++ b/src/CloudNative.CloudEvents.NewtonsoftJson/CloudNative.CloudEvents.NewtonsoftJson.csproj
@@ -3,7 +3,6 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net8.0</TargetFrameworks>
     <Description>JSON support for the CNCF CloudEvents SDK, based on Newtonsoft.Json.</Description>
-    <LangVersion>10.0</LangVersion>
     <Nullable>enable</Nullable>
     <PackageTags>cncf;cloudnative;cloudevents;events;json;newtonsoft</PackageTags>
   </PropertyGroup>
diff --git a/src/CloudNative.CloudEvents.Protobuf/CloudNative.CloudEvents.Protobuf.csproj b/src/CloudNative.CloudEvents.Protobuf/CloudNative.CloudEvents.Protobuf.csproj
index ed0cd68..b451ee5 100644
--- a/src/CloudNative.CloudEvents.Protobuf/CloudNative.CloudEvents.Protobuf.csproj
+++ b/src/CloudNative.CloudEvents.Protobuf/CloudNative.CloudEvents.Protobuf.csproj
@@ -1,10 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-	<TargetFrameworks>netstandard2.0;netstandard2.1;net8.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netstandard2.1;net8.0</TargetFrameworks>
 	<Description>Support for the Protobuf event format in for CloudNative.CloudEvents</Description>
 	<PackageTags>cncf;cloudnative;cloudevents;events;protobuf</PackageTags>
-	<LangVersion>10.0</LangVersion>
 	<Nullable>enable</Nullable>
   </PropertyGroup>
 
diff --git a/src/CloudNative.CloudEvents.SystemTextJson/CloudNative.CloudEvents.SystemTextJson.csproj b/src/CloudNative.CloudEvents.SystemTextJson/CloudNative.CloudEvents.SystemTextJson.csproj
index b188ac8..dde18c8 100644
--- a/src/CloudNative.CloudEvents.SystemTextJson/CloudNative.CloudEvents.SystemTextJson.csproj
+++ b/src/CloudNative.CloudEvents.SystemTextJson/CloudNative.CloudEvents.SystemTextJson.csproj
@@ -3,7 +3,6 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net8.0</TargetFrameworks>
     <Description>JSON support for the CNCF CloudEvents SDK, based on System.Text.Json.</Description>
-    <LangVersion>10.0</LangVersion>
     <PackageTags>cncf;cloudnative;cloudevents;events;json;systemtextjson</PackageTags>
     <Nullable>enable</Nullable>
   </PropertyGroup>
diff --git a/src/CloudNative.CloudEvents/CloudNative.CloudEvents.csproj b/src/CloudNative.CloudEvents/CloudNative.CloudEvents.csproj
index 27f8735..aa85f9b 100644
--- a/src/CloudNative.CloudEvents/CloudNative.CloudEvents.csproj
+++ b/src/CloudNative.CloudEvents/CloudNative.CloudEvents.csproj
@@ -3,7 +3,6 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;netstandard2.1;net8.0</TargetFrameworks>
     <Description>CNCF CloudEvents SDK</Description>
-    <LangVersion>latest</LangVersion>
     <Nullable>enable</Nullable>
     <PackageTags>cloudnative;cloudevents;events</PackageTags>
   </PropertyGroup>
diff --git a/src/Directory.Build.props b/src/Directory.Build.props
index e093cef..1fcb581 100644
--- a/src/Directory.Build.props
+++ b/src/Directory.Build.props
@@ -26,6 +26,8 @@
     <SignAssembly>True</SignAssembly>
     <Deterministic>True</Deterministic>
     <TreatWarningsAsErrors>True</TreatWarningsAsErrors>
+    <!-- Keep C# 10 explicit while supporting netstandard2.0/netstandard2.1: older defaults break nullable and file-scoped namespaces. -->
+    <LangVersion>10.0</LangVersion>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>    
     <EnablePackageValidation>true</EnablePackageValidation>
     <ApiCompatEnableRuleCannotChangeParameterName>true</ApiCompatEnableRuleCannotChangeParameterName>