diff --git a/6_2_Sending_a_Transaction_with_a_Locktime.md b/6_3_Sending_a_Transaction_with_a_Locktime.md
similarity index 100%
rename from 6_2_Sending_a_Transaction_with_a_Locktime.md
rename to 6_3_Sending_a_Transaction_with_a_Locktime.md