yshui
diff --git a/‎NOTICE ‎COPYING
+10 b/‎NOTICE ‎COPYING
+10
diff --git a/‎LICENSE.spdx
+4 b/‎LICENSE.spdx
+4
diff --git a/‎LICENSE-mit ‎LICENSES/MIT b/‎LICENSE-mit ‎LICENSES/MIT
diff --git a/‎LICENSE ‎LICENSES/MPL-2.0 b/‎LICENSE ‎LICENSES/MPL-2.0
@@ -8,3 +8,13 @@ and Carl Worth. Menu transparency was implemented by Dana Jansens.
 Numerous contributions to compton from Richard Grenville.
 
 See the CONTRIBUTORS file for a complete list of contributors
+
+This source code is provided under:
+
+	SPDX-License-Identifier: MPL-2.0 AND MIT
+
+And the preferred license for new source files in this project is:
+
+	SPDX-License-Identifier: MPL-2.0
+
+You can find the text of the licenses in the LICENSES directory.
@@ -0,0 +1,4 @@
+SPDXVersion: SPDX-2.1
+DataLicense: CC0-1.0
+PackageName: compton
+PackageLicenseDeclared: MPL-2.0 AND MIT