diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4b0de7b..cd06a49 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## 1.2.1 - 2024-12-21
+- Fixed an issue where post-load messages were not displayed in some games
+- Fixed a graphic issue in the underground passage in Intruder (#31)
+- Fixed various issues in 走り女II (#32)
+
 ## 1.2.0 - 2024-12-06
 - Windows: `Message` -> `Auto Copy to Clipboard` menu command has been added.
   When enabled, in-game text will be copied to the clipboard automatically. This
diff --git a/android/app/build.gradle b/android/app/build.gradle
index 8ac2496..fdfb57d 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -16,8 +16,8 @@ android {
     defaultConfig {
         minSdkVersion 19
         targetSdkVersion 34
-        versionCode 13
-        versionName "1.2.0" + gitRevision()
+        versionCode 14
+        versionName "1.2.1" + gitRevision()
         externalNativeBuild {
             cmake {
                 arguments "-DANDROID_APP_PLATFORM=android-19", "-DANDROID_STL=c++_static"
diff --git a/src/common.h b/src/common.h
index 09a1d32..b1ee275 100644
--- a/src/common.h
+++ b/src/common.h
@@ -7,7 +7,7 @@
 #ifndef _COMMON_H_
 #define _COMMON_H_
 
-#define SYSTEM3_VERSION "1.2.0"
+#define SYSTEM3_VERSION "1.2.1"
 
 #include <SDL.h>
 #include <assert.h>