diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 40d4923d1..dd8a42201 100755
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -48,8 +48,8 @@ android {
         applicationId = "xyz.leinss.TobiBoard"
         minSdk = 21
         targetSdk = 35
-        versionCode = 6812
-        versionName = "6.8.12"
+        versionCode = 6813
+        versionName = "6.8.13"
         buildConfigField("boolean", "ALLOW_USER_SUPPLIED_JNI", "false")
         buildConfigField("boolean", "ENABLE_GESTURE_DATA_GATHERING", "false")
         manifestPlaceholders["gestureDataProviderEnabled"] = "false"
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index 877026845..f38589124 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -3,6 +3,14 @@
     native <methods>;
 }
 
+# sherpa-onnx: the native library (libsherpa-onnx-jni.so) reads the *fields* of these config
+# classes by name via JNI GetFieldID (e.g. "decodingMethod" on OfflineRecognizerConfig) and calls
+# their constructors/getters reflectively. R8 renames fields/classes by default, so without this the
+# native OfflineRecognizer fails to construct in minified release builds with
+# "Failed to get field ID for decodingMethod" — on-device voice input silently never runs (works in
+# unminified debug only). Keep the whole API surface so JNI name lookups resolve.
+-keep class com.k2fsa.sherpa.onnx.** { *; }
+
 # Keep classes that are used as a parameter type of methods that are also marked as keep
 # to preserve changing those methods' signature.
 -keep class helium314.keyboard.latin.dictionary.Dictionary
diff --git a/fastlane/metadata/android/en-US/changelogs/6813.txt b/fastlane/metadata/android/en-US/changelogs/6813.txt
new file mode 100644
index 000000000..c08d06cd8
--- /dev/null
+++ b/fastlane/metadata/android/en-US/changelogs/6813.txt
@@ -0,0 +1 @@
+- Fixed on-device voice typing: the speech recognizer failed to load in release builds, so dictation never produced text. It now loads and transcribes correctly.