diff --git a/README.md b/README.md
index ea08e4e..386209a 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,11 @@ Over time, I'm planning to add support for multiple AVR MCUs, however that
 may end up requiring more memory, so extensive of use of define macros will
 likely end up being the end result.
 
+**2023-02-18:**
+Support for using external crystal oscillators was added to the makefile.
+Using a 14.7456Mhz crystal allows for reduced error rates when using
+any standard baud rates.
+
 
 ## Features: