diff --git a/src/gui/app.rs b/src/gui/app.rs
index 6f9c868..1ac8af1 100755
--- a/src/gui/app.rs
+++ b/src/gui/app.rs
@@ -418,7 +418,7 @@ impl<Platform: PlatformCallbacks> eframe::App for App<Platform> {
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Handle Back key code event from Android.
 pub extern "C" fn Java_mw_gri_android_MainActivity_onBack(
     _env: jni::JNIEnv,
diff --git a/src/gui/platform/android/mod.rs b/src/gui/platform/android/mod.rs
index 29820ae..e275ec2 100644
--- a/src/gui/platform/android/mod.rs
+++ b/src/gui/platform/android/mod.rs
@@ -203,7 +203,7 @@ lazy_static! {
 
 /// Callback from Java code with last entered character from soft keyboard.
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 pub extern "C" fn Java_mw_gri_android_MainActivity_onCameraImage(
     env: JNIEnv,
     _class: JObject,
@@ -218,7 +218,7 @@ pub extern "C" fn Java_mw_gri_android_MainActivity_onCameraImage(
 
 /// Callback from Java code with picked file path.
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 pub extern "C" fn Java_mw_gri_android_MainActivity_onFilePick(
     _env: JNIEnv,
     _class: JObject,
diff --git a/src/gui/views/input/edit.rs b/src/gui/views/input/edit.rs
index eafe8ec..0650b5c 100644
--- a/src/gui/views/input/edit.rs
+++ b/src/gui/views/input/edit.rs
@@ -404,7 +404,7 @@ lazy_static! {
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Callback from Java code with last entered character from soft keyboard.
 pub extern "C" fn Java_mw_gri_android_MainActivity_onTextInput(
     _env: jni::JNIEnv,
@@ -429,7 +429,7 @@ pub extern "C" fn Java_mw_gri_android_MainActivity_onTextInput(
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Callback from Java code when Clear key was pressed at soft keyboard.
 pub extern "C" fn Java_mw_gri_android_MainActivity_onClearInput(
     _env: jni::JNIEnv,
@@ -442,7 +442,7 @@ pub extern "C" fn Java_mw_gri_android_MainActivity_onClearInput(
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Callback from Java code when Enter key was pressed at soft keyboard.
 pub extern "C" fn Java_mw_gri_android_MainActivity_onEnterInput(
     _env: jni::JNIEnv,
diff --git a/src/gui/views/views.rs b/src/gui/views/views.rs
index 1763130..69f65d5 100644
--- a/src/gui/views/views.rs
+++ b/src/gui/views/views.rs
@@ -709,7 +709,7 @@ lazy_static! {
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Callback from Java code to update display insets (cutouts).
 pub extern "C" fn Java_mw_gri_android_MainActivity_onDisplayInsets(
     _env: jni::JNIEnv,
diff --git a/src/lib.rs b/src/lib.rs
index a755d88..a90479d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -46,7 +46,7 @@ pub const VERSION: &str = env!("CARGO_PKG_VERSION");
 /// Android platform entry point.
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
-#[no_mangle]
+#[unsafe(no_mangle)]
 fn android_main(app: AndroidApp) {
     // Setup logger.
     logger::init_logger();
@@ -273,7 +273,7 @@ lazy_static! {
 #[allow(dead_code)]
 #[allow(non_snake_case)]
 #[cfg(target_os = "android")]
-#[no_mangle]
+#[unsafe(no_mangle)]
 pub extern "C" fn Java_mw_gri_android_MainActivity_onData(
     _env: jni::JNIEnv,
     _class: jni::objects::JObject,
diff --git a/src/node/node.rs b/src/node/node.rs
index f3c7bbe..dc14739 100644
--- a/src/node/node.rs
+++ b/src/node/node.rs
@@ -710,7 +710,7 @@ pub fn start_stratum_mining_server(server: &Server, config: StratumServerConfig)
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Get sync status text for Android notification from [`NODE_STATE`] in Java string format.
 pub extern "C" fn Java_mw_gri_android_BackgroundService_getSyncStatusText(
     _env: jni::JNIEnv,
@@ -725,7 +725,7 @@ pub extern "C" fn Java_mw_gri_android_BackgroundService_getSyncStatusText(
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Get sync title for Android notification in Java string format.
 pub extern "C" fn Java_mw_gri_android_BackgroundService_getSyncTitle(
     _env: jni::JNIEnv,
@@ -739,7 +739,7 @@ pub extern "C" fn Java_mw_gri_android_BackgroundService_getSyncTitle(
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Get start text for Android notification in Java string format.
 pub extern "C" fn Java_mw_gri_android_BackgroundService_getStartText(
     _env: jni::JNIEnv,
@@ -753,7 +753,7 @@ pub extern "C" fn Java_mw_gri_android_BackgroundService_getStartText(
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Get stop text for Android notification in Java string format.
 pub extern "C" fn Java_mw_gri_android_BackgroundService_getStopText(
     _env: jni::JNIEnv,
@@ -767,7 +767,7 @@ pub extern "C" fn Java_mw_gri_android_BackgroundService_getStopText(
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Get exit text for Android notification in Java string format.
 pub extern "C" fn Java_mw_gri_android_BackgroundService_getExitText(
     _env: jni::JNIEnv,
@@ -781,7 +781,7 @@ pub extern "C" fn Java_mw_gri_android_BackgroundService_getExitText(
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Check if node launch is possible.
 pub extern "C" fn Java_mw_gri_android_BackgroundService_canStartNode(
     _env: jni::JNIEnv,
@@ -795,7 +795,7 @@ pub extern "C" fn Java_mw_gri_android_BackgroundService_canStartNode(
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Check if node stop is possible.
 pub extern "C" fn Java_mw_gri_android_BackgroundService_canStopNode(
     _env: jni::JNIEnv,
@@ -809,7 +809,7 @@ pub extern "C" fn Java_mw_gri_android_BackgroundService_canStopNode(
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Start node from Android Java code.
 pub extern "C" fn Java_mw_gri_android_NotificationActionsReceiver_startNode(
     _env: jni::JNIEnv,
@@ -822,7 +822,7 @@ pub extern "C" fn Java_mw_gri_android_NotificationActionsReceiver_startNode(
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Stop node from Android Java code.
 pub extern "C" fn Java_mw_gri_android_NotificationActionsReceiver_stopNode(
     _env: jni::JNIEnv,
@@ -835,7 +835,7 @@ pub extern "C" fn Java_mw_gri_android_NotificationActionsReceiver_stopNode(
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Stop node from Android Java code.
 pub extern "C" fn Java_mw_gri_android_NotificationActionsReceiver_stopNodeToExit(
     _env: jni::JNIEnv,
@@ -852,7 +852,7 @@ pub extern "C" fn Java_mw_gri_android_NotificationActionsReceiver_stopNodeToExit
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Check if app exit is needed after node stop to finish Android app at background.
 pub extern "C" fn Java_mw_gri_android_BackgroundService_exitAppAfterNodeStop(
     _env: jni::JNIEnv,
@@ -866,7 +866,7 @@ pub extern "C" fn Java_mw_gri_android_BackgroundService_exitAppAfterNodeStop(
 #[allow(dead_code)]
 #[cfg(target_os = "android")]
 #[allow(non_snake_case)]
-#[no_mangle]
+#[unsafe(no_mangle)]
 /// Handle unexpected application termination on Android (removal from recent apps).
 pub extern "C" fn Java_mw_gri_android_MainActivity_onTermination(
     _env: jni::JNIEnv,