diff --git a/aa_1940pa_2nd_reference.tex b/aa_1940pa_2nd_reference.tex
index d9a086f..7f29d64 100644
--- a/aa_1940pa_2nd_reference.tex
+++ b/aa_1940pa_2nd_reference.tex
@@ -73,6 +73,9 @@ \section*{Turn Sequence}
 
 \vspace{.5cm}
 contribute: https://github.com/lensz/aa-short-reference
+
+\vspace{.5cm}
+Version: \today
 \end{center}
 
 \section*{{\normalsize Sources}}