diff --git a/.gitignore b/.gitignore
index 43dfc7a..f30c65b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,4 @@ TODO.md
 .gradle/
 build/
 local.properties
+.kotlin
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 6ad4567..1809fa9 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -6,7 +6,7 @@ google-agp = "8.5.0"
 google-ksp = "2.0.0-1.0.22"
 maven-junit = "5.10.3"
 maven-assertj = "3.26.0"
-maven-ktlint = "1.2.1"
+maven-ktlint = "1.3.1"
 maven-commons = "2.16.1"
 maven-binarycompatibilityvalidator = "0.14.0"
 
diff --git a/ktlint-gradle-plugin/src/test/kotlin/io/github/usefulness/functional/KotlinProjectTest.kt b/ktlint-gradle-plugin/src/test/kotlin/io/github/usefulness/functional/KotlinProjectTest.kt
index 0361210..bfaedf9 100644
--- a/ktlint-gradle-plugin/src/test/kotlin/io/github/usefulness/functional/KotlinProjectTest.kt
+++ b/ktlint-gradle-plugin/src/test/kotlin/io/github/usefulness/functional/KotlinProjectTest.kt
@@ -266,7 +266,9 @@ internal class KotlinProjectTest : WithGradleTest.Kotlin() {
         kotlinSourceFile(
             "CustomClass.kt",
             """
-            data class CustomClass(val value: Int)
+            data class CustomClass(
+                val value: Int,
+            )
             
             """.trimIndent(),
         )
@@ -281,7 +283,9 @@ internal class KotlinProjectTest : WithGradleTest.Kotlin() {
         kotlinSourceFile(
             "CustomClass.kt",
             """
-            data class CustomClass(val modified: Int)
+            data class CustomClass(
+                val modified: Int,
+            )
             
             """.trimIndent(),
         )
@@ -301,7 +305,9 @@ internal class KotlinProjectTest : WithGradleTest.Kotlin() {
         kotlinSourceFile(
             "CustomClass.kt",
             """
-            data class CustomClass(val modifiedEditorconfig: Int)
+            data class CustomClass(
+                val modifiedEditorconfig: Int,
+            )
             
             """.trimIndent(),
         )
@@ -313,7 +319,9 @@ internal class KotlinProjectTest : WithGradleTest.Kotlin() {
         kotlinSourceFile(
             "WrongFilename.kt",
             """
-            data class AnotherCustomClass(val modifiedEditorconfig: Int)
+            data class AnotherCustomClass(
+                val modifiedEditorconfig: Int,
+            )
             
             """.trimIndent(),
         )
@@ -338,7 +346,9 @@ internal class KotlinProjectTest : WithGradleTest.Kotlin() {
         kotlinSourceFile(
             "CustomClass.kt",
             """
-            data class CustomClass(val value: Int)
+            data class CustomClass(
+                val value: Int,
+            )
             
             """.trimIndent(),
         )
@@ -353,7 +363,9 @@ internal class KotlinProjectTest : WithGradleTest.Kotlin() {
         kotlinSourceFile(
             "CustomClass.kt",
             """
-            data class CustomClass(val modified: Int)
+            data class CustomClass(
+                val modified: Int,
+            )
             
             """.trimIndent(),
         )
@@ -373,7 +385,9 @@ internal class KotlinProjectTest : WithGradleTest.Kotlin() {
         kotlinSourceFile(
             "CustomClass.kt",
             """
-            data class CustomClass(val modifiedEditorconfig: Int)
+            data class CustomClass(
+                val modifiedEditorconfig: Int,
+            )
             
             """.trimIndent(),
         )
@@ -385,7 +399,9 @@ internal class KotlinProjectTest : WithGradleTest.Kotlin() {
         kotlinSourceFile(
             "WrongFilename.kt",
             """
-            data class AnotherCustomClass(val modifiedEditorconfig: Int)
+            data class AnotherCustomClass(
+                val modifiedEditorconfig: Int,
+            )
             
             """.trimIndent(),
         )