diff --git a/plotly.Rproj b/plotly.Rproj
index 4a4e498608..a3a26972c4 100644
--- a/plotly.Rproj
+++ b/plotly.Rproj
@@ -13,6 +13,7 @@ RnwWeave: knitr
 LaTeX: pdfLaTeX
 
 AutoAppendNewline: Yes
+LineEndingConversion: Posix
 
 BuildType: Package
 PackageUseDevtools: Yes