diff --git a/.gitattributes b/.gitattributes
index a02cfc4..cb44863 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,4 +1,5 @@
 apl/* linguist-vendored
 ardsfiles/* linguist-vendored
 manuals/* linguist-vendored
-pltfiles/* linguist-vendored
\ No newline at end of file
+pltfiles/* linguist-vendored
+*.plt linguist-vendored
\ No newline at end of file