diff --git a/paper/system-map.tex b/paper/system-map.tex
index 8703418..c923473 100644
--- a/paper/system-map.tex
+++ b/paper/system-map.tex
@@ -1,13 +1,13 @@
 \begin{figure}[tbp]
   \centering
-  \includegraphics[width=7cm]{./img/yoshino/360map/360map_screen1.png}
+  \includegraphics[width=7cm]{./img/yoshino/360map/360map_screen1.pdf}
   \caption{360度マップの動作画面（1つ目）}
   \label{360map_screen1}
 \end{figure}
 
 \begin{figure}[tbp]
   \centering
-  \includegraphics[width=7cm]{./img/yoshino/360map/360map_screen2.png}
+  \includegraphics[width=7cm]{./img/yoshino/360map/360map_screen2.pdf}
   \caption{360度マップの動作画面（2つ目）}
   \label{360map_screen2}
 \end{figure}