diff --git a/11_1_Understanding_Timelock_Options.md b/11_1_Understanding_Timelock_Options.md
index d144aa3..ca85960 100644
--- a/11_1_Understanding_Timelock_Options.md
+++ b/11_1_Understanding_Timelock_Options.md
@@ -1,8 +1,8 @@
-# 9.1: Understanding Timelock Options
+# 11.1: Understanding Timelock Options
 
 > :information_source:  **NOTE:** This is a draft in progress, so that I can get some feedback from early reviewers. It is not yet ready for learning.
 
-In [§6.4: Sending a Transaction with a Locktime](06_4_Sending_a_Transaction_with_a_Locktime.md), `nLocktime` offered a great first option for locking transactions so that they couldn't be spent until some point in the future — based either on time or blockheight. But, that's not the only way to put a timelock on a transaction.
+In [§8.1: Sending a Transaction with a Locktime](08_1_Sending_a_Transaction_with_a_Locktime.md), `nLocktime` offered a great first option for locking transactions so that they couldn't be spent until some point in the future — based either on time or blockheight. But, that's not the only way to put a timelock on a transaction.
 
 ## Understand the Limitations of nLockTime