diff --git a/CHANGELOG.md b/CHANGELOG.md
index 279c5d6..0ee9b9a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,10 +2,15 @@
 
 ## Versión actual
 
-- Versión base: `1.2.4`
+- Versión base: `1.2.5`
 
 ## Historial
 
+### 1.2.5 - 2026-04-23
+
+- Android vuelve a bloquearse al pasar a segundo plano cuando la biometría está activa, para que al regresar sí pida huella.
+- Se publica APK nuevo con versión visible `1.2.5`.
+
 ### 1.2.4 - 2026-04-23
 
 - Android corrige el cierre de sesión para volver a ofrecer la pantalla biométrica cuando existen credenciales biométricas guardadas.
diff --git a/VERSION b/VERSION
index e8ea05d..c813fe1 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.2.4
+1.2.5
diff --git a/android/app/build.gradle b/android/app/build.gradle
index 769aa29..58b9abc 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -18,8 +18,8 @@ android {
         applicationId "net.linkedcorp.linkedsign"
         minSdk 26
         targetSdk 35
-        versionCode 10204
-        versionName "1.2.4"
+        versionCode 10205
+        versionName "1.2.5"
 
         buildConfigField "String", "API_BASE_URL", "\"${apiBaseUrl}\""
     }
diff --git a/android/app/src/main/java/net/linkedcorp/linkedsign/ui/LinkedSignApp.kt b/android/app/src/main/java/net/linkedcorp/linkedsign/ui/LinkedSignApp.kt
index 0146a70..3e81eb4 100644
--- a/android/app/src/main/java/net/linkedcorp/linkedsign/ui/LinkedSignApp.kt
+++ b/android/app/src/main/java/net/linkedcorp/linkedsign/ui/LinkedSignApp.kt
@@ -95,6 +95,7 @@ import androidx.compose.material3.TopAppBar
 import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.material3.IconButton
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@@ -113,6 +114,9 @@ import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.layout.onSizeChanged
 import androidx.compose.ui.platform.LocalDensity
 import androidx.compose.ui.platform.LocalContext
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
+import androidx.lifecycle.compose.LocalLifecycleOwner
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.text.input.PasswordVisualTransformation
@@ -209,6 +213,7 @@ fun LinkedSignApp(viewModel: MainViewModel, appContext: Context, activity: Compo
     var selectedTab by rememberSaveable { mutableStateOf(AppTab.Documents) }
     var pendingSignDocumentId by rememberSaveable { mutableStateOf<String?>(null) }
     val biometricAvailable = remember(activity) { canUseBiometricAccess(activity) }
+    val lifecycleOwner = LocalLifecycleOwner.current
     var appUnlocked by rememberSaveable { mutableStateOf(false) }
     var bootstrapGateHandled by rememberSaveable { mutableStateOf(false) }
     var showBiometricOptIn by rememberSaveable { mutableStateOf(false) }
@@ -235,6 +240,23 @@ fun LinkedSignApp(viewModel: MainViewModel, appContext: Context, activity: Compo
         }
     }
 
+    DisposableEffect(lifecycleOwner, biometricAvailable, state.biometricEnabled, state.biometricHasCredentials) {
+        val observer = LifecycleEventObserver { _, event ->
+            if (event == Lifecycle.Event.ON_STOP &&
+                biometricAvailable &&
+                state.biometricEnabled &&
+                state.biometricHasCredentials
+            ) {
+                appUnlocked = false
+            }
+        }
+
+        lifecycleOwner.lifecycle.addObserver(observer)
+        onDispose {
+            lifecycleOwner.lifecycle.removeObserver(observer)
+        }
+    }
+
     Scaffold(
         modifier = Modifier.pointerInput(state.authenticated) {
             if (!state.authenticated) return@pointerInput
diff --git a/backend/package.json b/backend/package.json
index 5506159..a8565e6 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "linkedsign-backend",
-  "version": "1.2.4",
+  "version": "1.2.5",
   "private": true,
   "description": "Initial backend for LinkedSign",
   "main": "src/server.js",
diff --git a/frontend/package.json b/frontend/package.json
index bf890f3..4cfaa0e 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,7 +1,7 @@
 {
   "name": "frontend",
   "private": true,
-  "version": "1.2.4",
+  "version": "1.2.5",
   "type": "module",
   "scripts": {
     "dev": "vite",