diff --git a/.promu.yml b/.promu.yml
index c8b4a783..a4c4c598 100644
--- a/.promu.yml
+++ b/.promu.yml
@@ -17,3 +17,4 @@ build:
 tarball:
     files:
         - LICENSE
+        - NOTICE
diff --git a/NOTICE b/NOTICE
new file mode 100644
index 00000000..815e05ad
--- /dev/null
+++ b/NOTICE
@@ -0,0 +1,2 @@
+Copyright 2018 William Rouesnel
+Copyright 2021 The Prometheus Authors