diff --git a/repositories.txt b/repositories.txt
index 76cfe85b..b5c22ab6 100644
--- a/repositories.txt
+++ b/repositories.txt
@@ -1,3 +1,4 @@
+https://github.com/wzwyz/CrystalC
 https://github.com/wzwyz/Stringcalculater
 https://github.com/ejri/Cohere_Client_Arduino
 https://github.com/Zhu-jiatong/WebServerSessionManager.git