diff --git a/app/build.gradle b/app/build.gradle
index 1350235e..5e24c1fa 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -17,8 +17,8 @@ android {
         targetSdkVersion target_sdk_version
         minSdkVersion min_sdk_version
 
-        versionCode 316
-        versionName "3.1.6"
+        versionCode 317
+        versionName "3.1.7"
         applicationId "jp.juggler.subwaytooter"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"