diff --git a/src/frontends/android/app/build.gradle b/src/frontends/android/app/build.gradle
index 06ec3a8dc..6e2a10c43 100644
--- a/src/frontends/android/app/build.gradle
+++ b/src/frontends/android/app/build.gradle
@@ -45,8 +45,8 @@ android {
         minSdk = 24
         targetSdk = 36
 
-        versionCode 160
-        versionName "2.15.0"
+        versionCode 161
+        versionName "2.15.1"
 
         /* Base URL of the update storage, trailing slash included */
         buildConfigField "String", "UPDATE_BASE_URL", "\"${updateBaseUrl}\""
diff --git a/src/frontends/android/app/proguard-rules.txt b/src/frontends/android/app/proguard-rules.txt
index 2def79d82..785f3e746 100644
--- a/src/frontends/android/app/proguard-rules.txt
+++ b/src/frontends/android/app/proguard-rules.txt
@@ -58,3 +58,9 @@
 # --- squash warnings for optional dependencies referenced only from XML ---
 
 -dontwarn org.bouncycastle.jsse.util.**
+
+# --- Room databases are instantiated reflectively (WorkManager's WorkDatabase_Impl) ---
+
+-keep class * extends androidx.room.RoomDatabase {
+    <init>();
+}
diff --git a/src/frontends/android/gradle.properties b/src/frontends/android/gradle.properties
index 04d2e29c1..40ee7244f 100644
--- a/src/frontends/android/gradle.properties
+++ b/src/frontends/android/gradle.properties
@@ -2,3 +2,7 @@ android.enableJetifier=false
 android.nonTransitiveRClass=false
 android.useAndroidX=true
 org.gradle.jvmargs=-Xmx2048m -XX:MaxMetaspaceSize=512m -Dfile.encoding=UTF-8
+# AGP 9 strict full mode: "-keep class X" no longer keeps X's no-arg constructor,
+# which strips reflectively created classes (WorkManager's WorkDatabase_Impl
+# crashed 2.15.0 at startup). Keep the AGP 8 keep-rule semantics.
+android.r8.strictFullModeForKeepRules=false