diff --git a/papers/hatra21/hatra21.pdf b/papers/hatra21/hatra21.pdf
index 1009eba5..0844f6f2 100644
Binary files a/papers/hatra21/hatra21.pdf and b/papers/hatra21/hatra21.pdf differ
diff --git a/papers/hatra21/hatra21.tex b/papers/hatra21/hatra21.tex
index c11cd833..24c0727c 100644
--- a/papers/hatra21/hatra21.tex
+++ b/papers/hatra21/hatra21.tex
@@ -9,8 +9,6 @@
 \acmISBN{}
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