diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..27eb5d6
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Ivan Montiel Cardona and the PyMCU Project Authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/pyproject.toml b/pyproject.toml
index 28f90f0..8b08801 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "pymcu-plugin-sdk"
-version = "0.1.0a1"
+version = "0.1.0a2"
 description = "Shared base classes and plugin protocol for PyMCU backend and toolchain packages"
 readme = "README.md"
 authors = [
diff --git a/src/csharp/PyMCU.Backend.SDK.csproj b/src/csharp/PyMCU.Backend.SDK.csproj
index b7fd7b5..c095e2c 100644
--- a/src/csharp/PyMCU.Backend.SDK.csproj
+++ b/src/csharp/PyMCU.Backend.SDK.csproj
@@ -7,9 +7,9 @@
     <Nullable>enable</Nullable>
     <RootNamespace>PyMCU</RootNamespace>
     <AssemblyName>PyMCU.Backend.SDK</AssemblyName>
-    <Version>1.0.0-beta1</Version>
+    <Version>1.0.0-alpha.2</Version>
     <!-- MIT: paid backend authors reference this without inheriting AGPL. -->
-    <!-- SPDX-License-Identifier: MIT -->
+    <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <InvariantGlobalization>true</InvariantGlobalization>
     <!-- AOT-compatible JSON serialization requires source generation. -->
     <IsAotCompatible>true</IsAotCompatible>