diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 099d824..92bd63f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -16,6 +16,8 @@ jobs:
       uses: actions/setup-java@v1
       with:
         java-version: 1.8
+    - name: scalafmt with Gradle
+      run: ./gradlew spotlessCheck
     - name: Test with Gradle
       run: ./gradlew test
     - name: Release Packages into Github Packages
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e117fab..5c763a2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -14,6 +14,8 @@ jobs:
       uses: actions/setup-java@v1
       with:
         java-version: 1.8
+    - name: scalafmt with Gradle
+      run: ./gradlew spotlessCheck
     - name: Test with Gradle
       run: ./gradlew test
 
diff --git a/src/main/scala/pro/civitaspo/digdag/plugin/ecs_task/register/EcsTaskRegisterOperator.scala b/src/main/scala/pro/civitaspo/digdag/plugin/ecs_task/register/EcsTaskRegisterOperator.scala
index eb12f23..f508f30 100644
--- a/src/main/scala/pro/civitaspo/digdag/plugin/ecs_task/register/EcsTaskRegisterOperator.scala
+++ b/src/main/scala/pro/civitaspo/digdag/plugin/ecs_task/register/EcsTaskRegisterOperator.scala
@@ -170,7 +170,6 @@ class EcsTaskRegisterOperator(operatorName: String, context: OperatorContext, sy
     Optional.of(cd)
   }
 
-
   protected def configureDependsOn(c: Config): Optional[ContainerDependency] = {
     if (c.isEmpty) return Optional.absent()
 
@@ -187,8 +186,7 @@ class EcsTaskRegisterOperator(operatorName: String, context: OperatorContext, sy
   protected def configureEphemeralStorage(c: Config): Optional[EphemeralStorage] = {
     if (c.isEmpty) return Optional.absent()
 
-    val sizeInGiB
-        : Int = c.get("size_in_gi_b", classOf[Int])
+    val sizeInGiB: Int = c.get("size_in_gi_b", classOf[Int])
 
     val es: EphemeralStorage = new EphemeralStorage()
     es.setSizeInGiB(sizeInGiB)