diff --git a/site-cookbooks/kosmos-bitcoin/attributes/default.rb b/site-cookbooks/kosmos-bitcoin/attributes/default.rb
index a270116..3240b96 100644
--- a/site-cookbooks/kosmos-bitcoin/attributes/default.rb
+++ b/site-cookbooks/kosmos-bitcoin/attributes/default.rb
@@ -1,5 +1,5 @@
-node.default['bitcoin']['version']   = '0.20.1'
-node.default['bitcoin']['checksum']  = '4bbd62fd6acfa5e9864ebf37a24a04bc2dcfe3e3222f056056288d854c53b978'
+node.default['bitcoin']['version']   = '0.21.0'
+node.default['bitcoin']['checksum']  = '1a91202c62ee49fb64d57a52b8d6d01cd392fffcbef257b573800f9289655f37'
 node.default['bitcoin']['username']  = 'satoshi'
 node.default['bitcoin']['usergroup'] = 'bitcoin'
 node.default['bitcoin']['network']   = 'mainnet'