diff --git a/SMBSync2/src/main/assets/SMBSync2_Change_EN.md b/SMBSync2/src/main/assets/SMBSync2_Change_EN.md
index 35b9dd4f..aae6cfe0 100644
--- a/SMBSync2/src/main/assets/SMBSync2_Change_EN.md
+++ b/SMBSync2/src/main/assets/SMBSync2_Change_EN.md
@@ -1,3 +1,16 @@
+#### 2021-05-14 Ver2.52
+
+- Fixed an error in Media Scan.
+
+#### 2021-03-07 Ver2.51
+
+- Fixed a bug that left a notification message.
+
+#### 2021-03-01 Ver2.50
+
+- Improved Chinese (zh) translation
+- Resolved a bug that left a notification message when rebooting
+
 #### 2021-03-07 Ver2.49
 
 - Fixed the bug that notification messages remain.
diff --git a/SMBSync2/src/main/assets/SMBSync2_Change_JA.md b/SMBSync2/src/main/assets/SMBSync2_Change_JA.md
index 78e4e3a6..fee0cd53 100644
--- a/SMBSync2/src/main/assets/SMBSync2_Change_JA.md
+++ b/SMBSync2/src/main/assets/SMBSync2_Change_JA.md
@@ -1,3 +1,7 @@
+#### 2021-05-14 Ver2.52
+
+- Media Scanでエラーになる現象に対応
+
 #### 2021-03-07 Ver2.51
 
 - 通知メッセージが残るバグを解決
diff --git a/debug_apk/SMBSync2_debug.apk b/debug_apk/SMBSync2_debug.apk
index 4bc3e316..c004b929 100644
Binary files a/debug_apk/SMBSync2_debug.apk and b/debug_apk/SMBSync2_debug.apk differ