diff --git a/1.4.md b/1.4.md
index ce2666ba..254278d7 100644
--- a/1.4.md
+++ b/1.4.md
@@ -15,6 +15,19 @@
 **Song**<br \>
 - [Linux] Added support for Spotify.
 
+**Birthday**<br \>
+- Added `--birthday_format` and `$birthday_format` to change the date format of the<br \>
+birthday function. The flag uses the `date` cmd's format options so see `man date`<br \>
+for a list.
+
+Example:
+
+```sh
+neofetch --birthday_format "%D"
+neofetch --birthday_format "%a %d %b %Y %l:%M %p"
+neofetch --birthday_format "%c"
+```
+
 ### Ascii
 
 - Added small ascii logo variants for Arch, Crux and Gentoo.