diff --git a/android-app/android-app.iml b/android-app/android-app.iml
index 1e6cc733..2c2f13d0 100644
--- a/android-app/android-app.iml
+++ b/android-app/android-app.iml
@@ -81,7 +81,7 @@
       <excludeFolder url="file://$MODULE_DIR$/build/outputs" />
       <excludeFolder url="file://$MODULE_DIR$/build/tmp" />
     </content>
-    <orderEntry type="jdk" jdkName="Maven Android API 17 Platform" jdkType="Android SDK" />
+    <orderEntry type="jdk" jdkName="Android API 21 Platform" jdkType="Android SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="library" exported="" name="play-services-6.5.87" level="project" />
     <orderEntry type="library" exported="" name="support-v4-21.0.3" level="project" />
diff --git a/build.gradle b/build.gradle
index 432f457f..c52f1c8d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,7 +7,7 @@ public String version_name() {
 }
 
 public int android_sdk_version() {
-  return 17
+  return 21
 }
 
 public String android_build_tools_version() {