diff --git a/docs/Alpha派/README_ja.md b/docs/Alpha派/README_ja.md
index ab18418..1ec61e9 100644
--- a/docs/Alpha派/README_ja.md
+++ b/docs/Alpha派/README_ja.md
@@ -8,4 +8,4 @@ AI投資研究エージェント/次世代の金融情報エントリーポイ
 
 <img src="./assets/Alpha派-0.png" width="360" height="auto" />
 
-<img src="./assets/Alpha派-1.png.jpg" width="360" height="auto" />
+<img src="./assets/Alpha派-1.png" width="360" height="auto" />