diff --git a/repositories.txt b/repositories.txt
index 8afcbf1c..5675b02d 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -1,3 +1,4 @@
+https://github.com/Moarbue/FIR-Filter
 https://github.com/Morgritech/MT-arduino-rotary-encoder
 https://github.com/CIRCUITSTATE/CSE_ZH06
 https://github.com/ropg/spi_lcd_read