diff --git a/repositories.txt b/repositories.txt
index f2854031..f94e47a9 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -1,3 +1,4 @@
+https://github.com/esp-arduino-libs/esp-io-expander
 https://github.com/GyverLibs/Stamp
 https://github.com/GyverLibs/GyverBeeper
 https://github.com/GyverLibs/GyverBlinker