diff --git a/6_2_Sending_a_Raw_Transaction_with_a_Locktime.md b/6_2_Sending_a_Raw_Transaction_with_a_Locktime.md
index 19a938e..5c79f74 100644
--- a/6_2_Sending_a_Raw_Transaction_with_a_Locktime.md
+++ b/6_2_Sending_a_Raw_Transaction_with_a_Locktime.md
@@ -1,4 +1,4 @@
-# 5.5: Sending a Raw Transaction with a Locktime
+# 6.2: Sending a Raw Transaction with a Locktime
 
 > **NOTE:** This is a draft in progress, so that I can get some feedback from early reviewers. It is not yet ready for learning.