diff --git a/gradle.properties b/gradle.properties
index 161bdfb..35b5b4e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -15,8 +15,8 @@ org.gradle.jvmargs=-Xmx1536m
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
-VERSION_NAME=0.0.1
-VERSION_CODE=1
+VERSION_NAME=0.0.2
+VERSION_CODE=2
 USER_ORG=yuki312
 GROUP_ID=com.yuki312
 ARTIFACT_ID=RxBackoff
diff --git a/library/build.gradle b/library/build.gradle
index 985b669..45c8c48 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -8,8 +8,8 @@ android {
   defaultConfig {
     minSdkVersion 19
     targetSdkVersion 27
-    versionCode 1
-    versionName "1.0"
+    versionCode VERSION_CODE as int
+    versionName VERSION_NAME
 
     testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
   }