diff --git a/GC9A01/SOURCE b/GC9A01/SOURCE
new file mode 100644
index 0000000..4a02fe8
--- /dev/null
+++ b/GC9A01/SOURCE
@@ -0,0 +1 @@
+https://github.com/dorsic/Pico-GC9A01?tab=GPL-3.0-1-ov-file