diff --git a/docs/upgrade-guides/v0.10-->v1.0.md b/docs/upgrade-guides/v0.10-->v1.0.md
index 63d01a2c..a5f8ad78 100644
--- a/docs/upgrade-guides/v0.10-->v1.0.md
+++ b/docs/upgrade-guides/v0.10-->v1.0.md
@@ -107,6 +107,11 @@ If you don't find your preferred language in this list, do not despair but
 reach out to us for help on Github/Gitter or product@bigchaindb.com.
 
 
+#### Transaction version is now 1.0
+
+The `version` key in the transaction is now set to `'1.0'`.
+
+
 ## Breaking Changes to the HTTP API
 
 In this section, we'll go over each of the endpoints separately and list the