diff --git a/repositories.txt b/repositories.txt
index dcf522512..e834a071e 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -1575,6 +1575,7 @@ https://github.com/dreed47/WifiMQTTManager
 https://github.com/drewfish/arduino-FourRegs
 https://github.com/drewfish/arduino-TrimWright
 https://github.com/drewfish/arduino-ZeroRegs
+https://github.com/drf5n/Arduino-PID-Library
 https://github.com/DrGamerGuy/GLCD
 https://github.com/DrGFreeman/SharpDistSensor
 https://github.com/DrGFreeman/TimedPID