diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000..6c0db7dc
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,3 @@
+# Tell github that .res and .resi files are ReScript
+*.res linguist-language=ReScript
+*.resi linguist-language=ReScript