diff --git a/bip39.md b/bip39.md
index 0982d080c..8d2121481 100644
--- a/bip39.md
+++ b/bip39.md
@@ -1,6 +1,7 @@
 # Bip39
 
-- [[go]] https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki
+- [[go]] https://github.com/trezor/python-mnemonic
+- [[spec]] https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki
 
 
 [//begin]: # "Autogenerated link references for markdown compatibility"