diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000..ff14b851
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,4 @@
+# add language detection for custom file extension
+*.ttslua linguist-language=Lua
+*.gmnotes linguist-language=json
+*.luascriptstate linguist-language=json
\ No newline at end of file