diff --git a/Source/MQTTnet.AspnetCore/MQTTnet.AspNetCore.csproj b/Source/MQTTnet.AspnetCore/MQTTnet.AspNetCore.csproj
index 3a8e419d..17a34c2a 100644
--- a/Source/MQTTnet.AspnetCore/MQTTnet.AspNetCore.csproj
+++ b/Source/MQTTnet.AspnetCore/MQTTnet.AspNetCore.csproj
@@ -16,7 +16,7 @@
         <PublishRepositoryUrl>true</PublishRepositoryUrl>
         <IncludeSymbols>true</IncludeSymbols>
         <SymbolPackageFormat>snupkg</SymbolPackageFormat>
-        <Copyright>Christian Kratky 2016-2022</Copyright>
+        <Copyright>Copyright (c) .NET Foundation and Contributors</Copyright>
         <PackageProjectUrl>https://github.com/dotnet/MQTTnet</PackageProjectUrl>
         <RepositoryUrl>https://github.com/dotnet/MQTTnet.git</RepositoryUrl>
         <RepositoryType>git</RepositoryType>
diff --git a/Source/MQTTnet.Extensions.ManagedClient/MQTTnet.Extensions.ManagedClient.csproj b/Source/MQTTnet.Extensions.ManagedClient/MQTTnet.Extensions.ManagedClient.csproj
index ea1f8733..20a92805 100644
--- a/Source/MQTTnet.Extensions.ManagedClient/MQTTnet.Extensions.ManagedClient.csproj
+++ b/Source/MQTTnet.Extensions.ManagedClient/MQTTnet.Extensions.ManagedClient.csproj
@@ -18,7 +18,7 @@
         <PublishRepositoryUrl>true</PublishRepositoryUrl>
         <IncludeSymbols>true</IncludeSymbols>
         <SymbolPackageFormat>snupkg</SymbolPackageFormat>
-        <Copyright>Christian Kratky 2016-2022</Copyright>
+        <Copyright>Copyright (c) .NET Foundation and Contributors</Copyright>
         <PackageProjectUrl>https://github.com/dotnet/MQTTnet</PackageProjectUrl>
         <RepositoryUrl>https://github.com/dotnet/MQTTnet.git</RepositoryUrl>
         <RepositoryType>git</RepositoryType>
diff --git a/Source/MQTTnet.Extensions.Rpc/MQTTnet.Extensions.Rpc.csproj b/Source/MQTTnet.Extensions.Rpc/MQTTnet.Extensions.Rpc.csproj
index 14a446a3..f5cc50bc 100644
--- a/Source/MQTTnet.Extensions.Rpc/MQTTnet.Extensions.Rpc.csproj
+++ b/Source/MQTTnet.Extensions.Rpc/MQTTnet.Extensions.Rpc.csproj
@@ -18,7 +18,7 @@
         <PublishRepositoryUrl>true</PublishRepositoryUrl>
         <IncludeSymbols>true</IncludeSymbols>
         <SymbolPackageFormat>snupkg</SymbolPackageFormat>
-        <Copyright>Christian Kratky 2016-2022</Copyright>
+        <Copyright>Copyright (c) .NET Foundation and Contributors</Copyright>
         <PackageProjectUrl>https://github.com/dotnet/MQTTnet</PackageProjectUrl>
         <RepositoryUrl>https://github.com/dotnet/MQTTnet.git</RepositoryUrl>
         <RepositoryType>git</RepositoryType>
diff --git a/Source/MQTTnet.Extensions.WebSocket4Net/MQTTnet.Extensions.WebSocket4Net.csproj b/Source/MQTTnet.Extensions.WebSocket4Net/MQTTnet.Extensions.WebSocket4Net.csproj
index 0507799c..58a84d48 100644
--- a/Source/MQTTnet.Extensions.WebSocket4Net/MQTTnet.Extensions.WebSocket4Net.csproj
+++ b/Source/MQTTnet.Extensions.WebSocket4Net/MQTTnet.Extensions.WebSocket4Net.csproj
@@ -18,7 +18,7 @@
         <PublishRepositoryUrl>true</PublishRepositoryUrl>
         <IncludeSymbols>true</IncludeSymbols>
         <SymbolPackageFormat>snupkg</SymbolPackageFormat>
-        <Copyright>Christian Kratky 2016-2022</Copyright>
+        <Copyright>Copyright (c) .NET Foundation and Contributors</Copyright>
         <PackageProjectUrl>https://github.com/dotnet/MQTTnet</PackageProjectUrl>
         <RepositoryUrl>https://github.com/dotnet/MQTTnet.git</RepositoryUrl>
         <RepositoryType>git</RepositoryType>
diff --git a/Source/MQTTnet/MQTTnet.csproj b/Source/MQTTnet/MQTTnet.csproj
index 3a521237..7fd8713c 100644
--- a/Source/MQTTnet/MQTTnet.csproj
+++ b/Source/MQTTnet/MQTTnet.csproj
@@ -29,7 +29,7 @@
         <PublishRepositoryUrl>true</PublishRepositoryUrl>
         <IncludeSymbols>true</IncludeSymbols>
         <SymbolPackageFormat>snupkg</SymbolPackageFormat>
-        <Copyright>Christian Kratky 2016-2022</Copyright>
+        <Copyright>Copyright (c) .NET Foundation and Contributors</Copyright>
         <PackageProjectUrl>https://github.com/dotnet/MQTTnet</PackageProjectUrl>
         <RepositoryUrl>https://github.com/dotnet/MQTTnet.git</RepositoryUrl>
         <RepositoryType>git</RepositoryType>