diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 58992cc..0e23f8e 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -5,19 +5,14 @@
       <GradleProjectSettings>
         <option name="distributionType" value="LOCAL" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleHome" value="$APPLICATION_HOME_DIR$/gradle/gradle-2.10" />
+        <option name="gradleHome" value="$APPLICATION_HOME_DIR$/gradle/gradle-2.14.1" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
             <option value="$PROJECT_DIR$/app" />
           </set>
         </option>
-        <option name="myModules">
-          <set>
-            <option value="$PROJECT_DIR$" />
-            <option value="$PROJECT_DIR$/app" />
-          </set>
-        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
       </GradleProjectSettings>
     </option>
   </component>
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/app/src/main/java/jp/narr/tensorflowmnist/MainActivity.java b/app/src/main/java/jp/narr/tensorflowmnist/MainActivity.java
index aebe4ad..b9598ff 100644
--- a/app/src/main/java/jp/narr/tensorflowmnist/MainActivity.java
+++ b/app/src/main/java/jp/narr/tensorflowmnist/MainActivity.java
@@ -37,7 +37,7 @@ public class MainActivity extends AppCompatActivity implements View.OnTouchListe
 	private DrawModel mModel;
 	private DrawView mDrawView;
 
-	private PointF mTmpPiont = new PointF();
+	private PointF mTmpPoint = new PointF();
 
 	private DigitDetector mDetector = new DigitDetector();
 
@@ -113,9 +113,9 @@ public boolean onTouch(View v, MotionEvent event) {
 	private void processTouchDown(MotionEvent event) {
 		mLastX = event.getX();
 		mLastY = event.getY();
-		mDrawView.calcPos(mLastX, mLastY, mTmpPiont);
-		float lastConvX = mTmpPiont.x;
-		float lastConvY = mTmpPiont.y;
+		mDrawView.calcPos(mLastX, mLastY, mTmpPoint);
+		float lastConvX = mTmpPoint.x;
+		float lastConvY = mTmpPoint.y;
 		mModel.startLine(lastConvX, lastConvY);
 	}
 
@@ -123,9 +123,9 @@ private void processTouchMove(MotionEvent event) {
 		float x = event.getX();
 		float y = event.getY();
 
-		mDrawView.calcPos(x, y, mTmpPiont);
-		float newConvX = mTmpPiont.x;
-		float newConvY = mTmpPiont.y;
+		mDrawView.calcPos(x, y, mTmpPoint);
+		float newConvX = mTmpPoint.x;
+		float newConvY = mTmpPoint.y;
 		mModel.addLineElem(newConvX, newConvY);
 
 		mLastX = x;
diff --git a/build.gradle b/build.gradle
index aff4f41..c20bca1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.1.2'
+        classpath 'com.android.tools.build:gradle:2.2.2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 0e0576b..77bd474 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Mon Sep 26 20:47:15 JST 2016
+#Sun Nov 13 09:56:04 CST 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip