diff --git a/android/app/src/main/java/com/reactnativesemaphorenew/MainApplication.java b/android/app/src/main/java/com/reactnativesemaphorenew/MainApplication.java
index dbdbf0e..d4b678e 100644
--- a/android/app/src/main/java/com/reactnativesemaphorenew/MainApplication.java
+++ b/android/app/src/main/java/com/reactnativesemaphorenew/MainApplication.java
@@ -10,7 +10,6 @@
 import com.facebook.soloader.SoLoader;
 import java.lang.reflect.InvocationTargetException;
 import java.util.List;
-import com.facebook.react.BuildConfig;
 
 public class MainApplication extends Application implements ReactApplication {
 
diff --git a/package.json b/package.json
index d51d544..2fe8577 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
   },
   "dependencies": {
     "react": "17.0.1",
-    "react-native": "0.64.0-rc.1"
+    "react-native": "0.64.0"
   },
   "devDependencies": {
     "@babel/core": "^7.8.4",
@@ -59,19 +59,19 @@
         "binaryPath": "ios/build/Build/Products/Debug-iphonesimulator/ReactNativeSemaphoreNew.app",
         "build": "xcodebuild ONLY_ACTIVE_ARCH=YES -workspace ios/ReactNativeSemaphoreNew.xcworkspace -scheme ReactNativeSemaphoreNew -configuration Debug -sdk iphonesimulator -derivedDataPath ios/build -UseModernBuildSystem=NO",
         "type": "ios.simulator",
-        "name": "iPhone 8"
+        "name": "iPhone 11"
       },
       "ios.sim.release": {
         "binaryPath": "ios/build/Build/Products/Release-iphonesimulator/ReactNativeSemaphoreNew.app",
         "build": "xcodebuild ONLY_ACTIVE_ARCH=YES -workspace ios/ReactNativeSemaphoreNew.xcworkspace -scheme ReactNativeSemaphoreNew -configuration Release -sdk iphonesimulator -derivedDataPath ios/build -UseModernBuildSystem=NO",
         "type": "ios.simulator",
-        "name": "iPhone 8"
+        "name": "iPhone 11"
       },
       "android.emu.debug": {
         "binaryPath": "android/app/build/outputs/apk/debug/app-debug.apk",
         "build": "cd android && ./gradlew assembleDebug assembleAndroidTest -DtestBuildType=debug && cd ..",
         "type": "android.emulator",
-        "name": "Nexus_S_API_24"
+        "name": "Pixel_4_API_28"
       },
       "android.emu.release": {
         "binaryPath": "android/app/build/outputs/apk/release/app-release.apk",