diff --git a/bip-0109.mediawiki b/bip-0109.mediawiki
index e7cf9e73..5e67e395 100644
--- a/bip-0109.mediawiki
+++ b/bip-0109.mediawiki
@@ -76,3 +76,7 @@ The choices of constants for the deployment scheme were motivated by prior exper
 https://github.com/gavinandresen/bitcoin-git/tree/two_mb_bump
 
 See also http://gavinandresen.ninja/a-guided-tour-of-the-2mb-fork
+
+==Copyright==
+
+This work is placed in the public domain.