diff --git a/.gitignore b/.gitignore
index a40214e..dba3e43 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,7 +18,7 @@
 # these rules might exclude image files for figures etc.
 # *.ps
 # *.eps
-# *.pdf
+*.pdf
 
 ## Generated if empty string is given at "Please type another file name for output:"
 .pdf
@@ -218,3 +218,5 @@ TSWLatexianTemp*
 *-tags.tex
 
 .Rproj.user
+.Rhistory
+*.Rproj