diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..b3c253f
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,3 @@
+# `.gitattributes` reclassify `.st` files as iec-st:
+** linguist-vendored
+# *.ppjs linguist-language=ST
\ No newline at end of file