diff --git a/.github/workflows/android.yml b/.github/workflows/android.yml
index 14f8d80..7eb54a7 100644
--- a/.github/workflows/android.yml
+++ b/.github/workflows/android.yml
@@ -1,6 +1,18 @@
 name: Android CI
 
-on: [push, pull_request]
+on:
+  push:
+    paths:
+      - "**.gradle"
+      - "**.rs"
+      - "**/Cargo.toml"
+      - ".github/workflows/**"
+  pull_request:
+    paths:
+      - "**.gradle"
+      - "**.rs"
+      - "**/Cargo.toml"
+      - ".github/workflows/**"
 
 jobs:
   build:
diff --git a/README.md b/README.md
index 503adc3..caefd82 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ rustup target add x86_64-linux-android      # for x86_64
 
 ### 3. Build Project with Gradle
 
-Use Rust-Android-Gradle: https://github.com/mozilla/rust-android-gradle
+Gradle build script support by: Rust-Android-Gradle: https://github.com/mozilla/rust-android-gradle
 
 **Windows**: 
 
@@ -48,6 +48,8 @@ Use Rust-Android-Gradle: https://github.com/mozilla/rust-android-gradle
 
 `./gradlew :module:zipRelease`
 
+And then, artifact will put in `out`
+
 ## Problem
 
 ### HardCoding