diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..d2c671d
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,12 @@
+Copyright (C) 2019 by Ralf Zerres <ralf.zerres@networkx.de>
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
\ No newline at end of file
diff --git a/LICENSE.spdx b/LICENSE.spdx
new file mode 100644
index 0000000..22fb941
--- /dev/null
+++ b/LICENSE.spdx
@@ -0,0 +1,6 @@
+SPDXVersion: SPDX-2.1
+DataLicense: CC0-1.0
+PackageName: advotracker
+PackageOriginator: Ralf Zerres
+PackageHomePage: https://github.com/rzerres/advotracker/
+PackageLicenseDeclared: 0BSD
\ No newline at end of file