diff --git a/registry.txt b/registry.txt
index 60e35ed6..4240f7e3 100644
--- a/registry.txt
+++ b/registry.txt
@@ -6410,3 +6410,4 @@ https://github.com/Octopus1633/Waveshare_RP2040_BLE.git|Contributed|Waveshare_RP
 https://github.com/Grovety/grc_arduino.git|Contributed|GRC_AI
 https://github.com/chhorisberger/M5StackMenuSystem.git|Contributed|M5StackMenuSystem
 https://github.com/stm32duino/X-NUCLEO-IKS4A1.git|Contributed|STM32duino X-NUCLEO-IKS4A1
+https://github.com/nthnn/SIM900.git|Contributed|SIM900