diff --git a/lib/CPUs/MIPS/dist/notes.txt b/lib/CPUs/MIPS/dist/notes.txt
index 488c8e6..78f7c0f 100644
--- a/lib/CPUs/MIPS/dist/notes.txt
+++ b/lib/CPUs/MIPS/dist/notes.txt
@@ -1,3 +1,10 @@
+-----------------------------------------------------------------
+Changes in release 13
+-----------------------------------------------------------------
+- mips_biu.vhd: added asynchronous BUS-FIFOs to support different clocks for CPU and BUS
+- mips_dcache.vhd: improved instant-RAW stall behavior (faster execution)
+- uart_WB.vhd: added simulate_TX generic for plain TX output in simulation log
+
 -----------------------------------------------------------------
 Changes in release 12
 -----------------------------------------------------------------