diff --git a/.gitignore b/.gitignore
index 193154061..b6b662e00 100644
--- a/.gitignore
+++ b/.gitignore
@@ -48,3 +48,4 @@ tests/tests.output
 WORK
 .d
 google-services.json
+gradle.properties
diff --git a/build.gradle b/build.gradle
index a67d62044..915e1c6f1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -24,7 +24,7 @@ dependencies {
 android {
   defaultConfig {
     compileSdkVersion 23
-    buildToolsVersion "23.0.2"
+    buildToolsVersion "25.0.2"
     applicationId "org.linphone"
     multiDexEnabled true
   }
@@ -181,4 +181,4 @@ task linphoneAndroidSdk(type: Zip) {
     }
     include "linphone.jar"
   }
-}
\ No newline at end of file
+}
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 000000000..f7ffd3517
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1,7 @@
+// Signing APK Release
+RELEASE_STORE_FILE=""
+RELEASE_STORE_PASSWORD=
+RELEASE_KEY_ALIAS=
+RELEASE_KEY_PASSWORD=
+
+org.gradle.jvmargs=-Xmx1536M