diff --git a/app/build.gradle b/app/build.gradle
old mode 100644
new mode 100755
index 03901a90..a71c2416
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,15 +1,16 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    compileSdkVersion 27
+    buildToolsVersion '27.0.3'
     defaultConfig {
         applicationId "com.example.android.mygarden"
         minSdkVersion 15
-        targetSdkVersion 25
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        vectorDrawables.useSupportLibrary = true
     }
     buildTypes {
         release {
@@ -20,9 +21,9 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:25.2.0'
-    compile 'com.android.support:design:25.2.0'
-    compile 'com.android.support:recyclerview-v7:25.2.0'
-    compile 'com.android.support.constraint:constraint-layout:1.0.2'
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation 'com.android.support:appcompat-v7:27.1.1'
+    implementation 'com.android.support:design:27.1.1'
+    implementation 'com.android.support:recyclerview-v7:27.1.1'
+    implementation 'com.android.support.constraint:constraint-layout:1.1.0'
 }
diff --git a/app/src/main/java/com/example/android/mygarden/ui/PlantListAdapter.java b/app/src/main/java/com/example/android/mygarden/ui/PlantListAdapter.java
old mode 100644
new mode 100755
index 484a909f..ffaef759
--- a/app/src/main/java/com/example/android/mygarden/ui/PlantListAdapter.java
+++ b/app/src/main/java/com/example/android/mygarden/ui/PlantListAdapter.java
@@ -82,7 +82,7 @@ public void onBindViewHolder(PlantViewHolder holder, int position) {
     }
 
     public void swapCursor(Cursor newCursor) {
-        if (mCursor != null) {
+        if (mCursor != null && mCursor != newCursor) {
             mCursor.close();
         }
         mCursor = newCursor;
diff --git a/build.gradle b/build.gradle
old mode 100644
new mode 100755
index 74b2ab0d..44bac8f9
--- a/build.gradle
+++ b/build.gradle
@@ -3,9 +3,10 @@
 buildscript {
     repositories {
         jcenter()
+        google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.3'
+        classpath 'com.android.tools.build:gradle:3.1.2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -15,6 +16,7 @@ buildscript {
 allprojects {
     repositories {
         jcenter()
+        google()
     }
 }
 
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 04e285f3..31fc30eb 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Mon Dec 28 10:00:20 PST 2015
+#Sat May 19 10:38:41 CDT 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip