diff --git a/app/build.gradle b/app/build.gradle
index b5a6717e..3d51eba6 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -18,8 +18,8 @@ android {
         minSdkVersion 21
         targetSdkVersion 33
         compileSdk 33
-        versionCode 30
-        versionName "6.5.1-r1"
+        versionCode 31
+        versionName "6.5.1-r2"
         testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
         externalNativeBuild {
             cmake {
diff --git a/app/src/main/cpp/tyrant_optimize b/app/src/main/cpp/tyrant_optimize
index 5fffbff3..bbbdd7ab 160000
--- a/app/src/main/cpp/tyrant_optimize
+++ b/app/src/main/cpp/tyrant_optimize
@@ -1 +1 @@
-Subproject commit 5fffbff3f7401cf72674078ee8951ffab834f6f9
+Subproject commit bbbdd7ab8dfe1a7333d0c6e2344fee4ec44249ba
diff --git a/fastlane/metadata/android/en-US/changelogs/31.txt b/fastlane/metadata/android/en-US/changelogs/31.txt
new file mode 100644
index 00000000..39155a89
--- /dev/null
+++ b/fastlane/metadata/android/en-US/changelogs/31.txt
@@ -0,0 +1 @@
+Fix buffer carry over of overflow char