diff --git a/repositories.txt b/repositories.txt
index b2503801..3dcad293 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -1,3 +1,4 @@
+https://github.com/bitbank2/PNGdec
 https://github.com/noah1510/generic-Arduino
 https://github.com/atc1441/NETSGPClient
 https://github.com/RobTillaart/relativity