diff --git a/paper/.gitignore b/paper/.gitignore
index 945e00e..97f6509 100644
--- a/paper/.gitignore
+++ b/paper/.gitignore
@@ -10,3 +10,4 @@
 *.pdf
 *.run.xml
 *.synctex.gz
+version.txt
diff --git a/paper/Makefile b/paper/Makefile
index fac3fe4..864e300 100644
--- a/paper/Makefile
+++ b/paper/Makefile
@@ -6,4 +6,4 @@ paper.pdf: paper.tex $(wildcard *.tikz)
 	latexmk -pdf
 
 clean:
-	xargs -I '{}' bash -c "rm -f {}" < .gitignore
+	grep -v version.txt .gitignore |xargs -I '{}' bash -c "rm -f {}"