diff --git a/Modelling.gitattributes b/Modelling.gitattributes
index b390647..386a586 100644
--- a/Modelling.gitattributes
+++ b/Modelling.gitattributes
@@ -29,6 +29,10 @@
 *.stl                   filter=lfs diff=lfs merge=lfs -text
 *.STL                   filter=lfs diff=lfs merge=lfs -text
 
+# pureref
+*.pur                   filter=lfs diff=lfs merge=lfs -text
+*.PUR                   filter=lfs diff=lfs merge=lfs -text
+
 # substance painter
 *.spp                   filter=lfs diff=lfs merge=lfs -text
 *.SPP                   filter=lfs diff=lfs merge=lfs -text