diff --git a/.editorconfig b/.editorconfig
index 3c92363..47da0e8 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -1,7 +1,10 @@
 [*.{kt,kts}]
+ktlint_code_style = intellij_idea
+
 # ktlint rules to disable
 ktlint_standard_no-wildcard-imports = disabled
 ktlint_standard_filename = disabled
+ktlint_standard_backing-property-naming = disabled
 
 # enable trailing commas per JetBrains recommendation
 # (https://kotlinlang.org/docs/coding-conventions.html#trailing-commas)
diff --git a/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/dsl/CodeStyle.kt b/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/dsl/CodeStyle.kt
index 1bdfe0c..6cd17a5 100644
--- a/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/dsl/CodeStyle.kt
+++ b/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/dsl/CodeStyle.kt
@@ -8,9 +8,8 @@ import aws.sdk.kotlin.gradle.util.verifyRootProject
 import org.gradle.api.Project
 import org.gradle.api.attributes.Bundling
 import org.gradle.api.tasks.JavaExec
-import org.gradle.kotlin.dsl.dependencies
-import org.gradle.kotlin.dsl.named
-import org.gradle.kotlin.dsl.register
+import org.gradle.kotlin.dsl.*
+import org.gradle.language.base.plugins.LifecycleBasePlugin
 
 /**
  * Configure lint rules for the project
@@ -19,36 +18,35 @@ import org.gradle.kotlin.dsl.register
 fun Project.configureLinting(lintPaths: List<String>) {
     verifyRootProject { "Kotlin SDK lint configuration is expected to be configured on the root project" }
 
-    val ktlint = configurations.create("ktlint") {
-        attributes {
-            attribute(Bundling.BUNDLING_ATTRIBUTE, objects.named(Bundling.EXTERNAL))
-        }
-    }
+    val ktlint by configurations.creating
 
-    // TODO - is there anyway to align this with the version from libs.versions.toml in this project/repo
-    val ktlintVersion = "0.48.1"
     dependencies {
-        ktlint("com.pinterest:ktlint:$ktlintVersion")
+        val ktlintVersion = "1.3.0"
+        ktlint("com.pinterest.ktlint:ktlint-cli:$ktlintVersion") {
+            attributes {
+                attribute(Bundling.BUNDLING_ATTRIBUTE, objects.named(Bundling.EXTERNAL))
+            }
+        }
     }
 
     // add the buildscript classpath which should pickup our custom ktlint-rules (via runtimeOnly dep on this plugin)
     // plus any custom rules added by consumer
-    val execKtlintClaspath = ktlint + buildscript.configurations.getByName("classpath")
+    val execKtlintClasspath = ktlint + buildscript.configurations.getByName("classpath")
+
     tasks.register<JavaExec>("ktlint") {
+        group = LifecycleBasePlugin.VERIFICATION_GROUP
         description = "Check Kotlin code style."
-        group = "Verification"
-        classpath = execKtlintClaspath
+        classpath = execKtlintClasspath
         mainClass.set("com.pinterest.ktlint.Main")
         args = lintPaths
-        jvmArgs("--add-opens", "java.base/java.lang=ALL-UNNAMED")
     }
 
     tasks.register<JavaExec>("ktlintFormat") {
+        group = LifecycleBasePlugin.VERIFICATION_GROUP
         description = "Auto fix Kotlin code style violations"
-        group = "formatting"
-        classpath = execKtlintClaspath
+        classpath = execKtlintClasspath
         mainClass.set("com.pinterest.ktlint.Main")
         args = listOf("-F") + lintPaths
-        jvmArgs("--add-opens", "java.base/java.lang=ALL-UNNAMED")
+        jvmArgs("--add-opens=java.base/java.lang=ALL-UNNAMED")
     }
 }
diff --git a/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/AnalyzeArtifactSizeMetrics.kt b/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/AnalyzeArtifactSizeMetrics.kt
index 9bbb970..08b1c2c 100644
--- a/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/AnalyzeArtifactSizeMetrics.kt
+++ b/build-plugins/build-support/src/main/kotlin/aws/sdk/kotlin/gradle/plugins/artifactsizemetrics/AnalyzeArtifactSizeMetrics.kt
@@ -103,8 +103,8 @@ internal abstract class AnalyzeArtifactSizeMetrics : DefaultTask() {
 
         val changeHappened = artifactSizeMetrics.values.any { it.delta.isNotaFluctuation() }
         val significantChange = artifactSizeMetrics.values.any {
-            (it.percentage > pluginConfig.significantChangeThresholdPercentage) || // Increase in size above threshold
-                (it.latestReleaseSize == 0L) // New artifact
+            // Increase in size above threshold or new artifact
+            (it.percentage > pluginConfig.significantChangeThresholdPercentage) || (it.latestReleaseSize == 0L)
         }
 
         return ArtifactSizeMetricsAnalysis(artifactSizeMetrics, significantChange, changeHappened)
diff --git a/build.gradle.kts b/build.gradle.kts
index a6b4b0a..1361364 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -44,15 +44,14 @@ fun propertyOrEnv(propName: String, envName: String): String? {
     return findProperty(propName) as? String ?: env[envName]
 }
 
-// chicken and egg problem, we can't use the kotlinter gradle plugin here AND use our custom rules
-val ktlint by configurations.creating {
-    attributes {
-        attribute(Bundling.BUNDLING_ATTRIBUTE, objects.named(Bundling.EXTERNAL))
-    }
-}
+val ktlint by configurations.creating
 
 dependencies {
-    ktlint(libs.ktlint)
+    ktlint(libs.ktlint.cli) {
+        attributes {
+            attribute(Bundling.BUNDLING_ATTRIBUTE, objects.named(Bundling.EXTERNAL))
+        }
+    }
     ktlint(project(":ktlint-rules"))
 }
 
@@ -61,19 +60,18 @@ val lintPaths = listOf(
 )
 
 tasks.register<JavaExec>("ktlint") {
+    group = LifecycleBasePlugin.VERIFICATION_GROUP
     description = "Check Kotlin code style."
-    group = "Verification"
-    classpath = configurations.getByName("ktlint")
+    classpath = ktlint
     mainClass.set("com.pinterest.ktlint.Main")
     args = lintPaths
-    jvmArgs("--add-opens", "java.base/java.lang=ALL-UNNAMED")
 }
 
 tasks.register<JavaExec>("ktlintFormat") {
+    group = LifecycleBasePlugin.VERIFICATION_GROUP
     description = "Auto fix Kotlin code style violations"
-    group = "formatting"
-    classpath = configurations.getByName("ktlint")
+    classpath = ktlint
     mainClass.set("com.pinterest.ktlint.Main")
     args = listOf("-F") + lintPaths
-    jvmArgs("--add-opens", "java.base/java.lang=ALL-UNNAMED")
+    jvmArgs("--add-opens=java.base/java.lang=ALL-UNNAMED")
 }
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index a6be39b..b26f7ac 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,12 +1,13 @@
 [versions]
-ktlint = "0.48.1"
+ktlint = "1.3.0"
 smithy-version = "1.42.0"
 smithy-gradle-plugin-version = "0.9.0"
 junit-version = "5.10.1"
 
 [libraries]
-ktlint = { module = "com.pinterest:ktlint", version.ref = "ktlint" }
-ktlint-core = { module = "com.pinterest.ktlint:ktlint-core", version.ref = "ktlint" }
+ktlint-cli = { module = "com.pinterest.ktlint:ktlint-cli", version.ref = "ktlint" }
+ktlint-rule-engine-core = { module = "com.pinterest.ktlint:ktlint-rule-engine-core", version.ref = "ktlint" }
+ktlint-cli-ruleset-core = { module = "com.pinterest.ktlint:ktlint-cli-ruleset-core", version.ref = "ktlint" }
 ktlint-test = {module = "com.pinterest.ktlint:ktlint-test", version.ref = "ktlint" }
 nexusPublishPlugin = { module = "io.github.gradle-nexus:publish-plugin", version = "1.3.0" }
 smithy-model = { module = "software.amazon.smithy:smithy-model", version.ref = "smithy-version" }
diff --git a/ktlint-rules/build.gradle.kts b/ktlint-rules/build.gradle.kts
index 6b722ba..9da2d86 100644
--- a/ktlint-rules/build.gradle.kts
+++ b/ktlint-rules/build.gradle.kts
@@ -16,7 +16,7 @@ kotlin {
     sourceSets {
         main {
             dependencies {
-                implementation(libs.ktlint.core)
+                implementation(libs.ktlint.cli.ruleset.core)
             }
         }
 
diff --git a/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/CopyrightHeaderRule.kt b/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/CopyrightHeaderRule.kt
index a43e837..dc0d9f1 100644
--- a/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/CopyrightHeaderRule.kt
+++ b/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/CopyrightHeaderRule.kt
@@ -4,13 +4,14 @@
  */
 package software.aws.ktlint.rules
 
-import com.pinterest.ktlint.core.Rule
+import com.pinterest.ktlint.rule.engine.core.api.Rule
+import com.pinterest.ktlint.rule.engine.core.api.RuleId
 import org.jetbrains.kotlin.com.intellij.lang.ASTNode
 import org.jetbrains.kotlin.com.intellij.psi.impl.source.tree.PsiCommentImpl
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.stubs.elements.KtFileElementType
 
-class CopyrightHeaderRule : Rule("copyright-header") {
+class CopyrightHeaderRule : Rule(RuleId("copyright-header"), About()) {
     companion object {
         private val header = """
         /*
diff --git a/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/CustomRuleSetProvider.kt b/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/CustomRuleSetProvider.kt
index d0c2cde..48e3a33 100644
--- a/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/CustomRuleSetProvider.kt
+++ b/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/CustomRuleSetProvider.kt
@@ -4,10 +4,11 @@
  */
 package software.aws.ktlint.rules
 
-import com.pinterest.ktlint.core.RuleProvider
-import com.pinterest.ktlint.core.RuleSetProviderV2
+import com.pinterest.ktlint.cli.ruleset.core.api.RuleSetProviderV3
+import com.pinterest.ktlint.rule.engine.core.api.RuleProvider
+import com.pinterest.ktlint.rule.engine.core.api.RuleSetId
 
-class CustomRuleSetProvider : RuleSetProviderV2("custom-ktlint-rules", NO_ABOUT) {
+class CustomRuleSetProvider : RuleSetProviderV3(RuleSetId("custom-ktlint-rules")) {
     override fun getRuleProviders() = setOf(
         RuleProvider { CopyrightHeaderRule() },
         RuleProvider { ExpressionBodyRule() },
diff --git a/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/ExpressionBodyRule.kt b/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/ExpressionBodyRule.kt
index 14d7647..e54e5c0 100644
--- a/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/ExpressionBodyRule.kt
+++ b/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/ExpressionBodyRule.kt
@@ -4,13 +4,14 @@
  */
 package software.aws.ktlint.rules
 
-import com.pinterest.ktlint.core.Rule
+import com.pinterest.ktlint.rule.engine.core.api.Rule
+import com.pinterest.ktlint.rule.engine.core.api.RuleId
 import org.jetbrains.kotlin.com.intellij.lang.ASTNode
 import org.jetbrains.kotlin.psi.KtBlockExpression
 import org.jetbrains.kotlin.psi.KtNamedFunction
 import org.jetbrains.kotlin.psi.KtReturnExpression
 
-class ExpressionBodyRule : Rule("expression-body") {
+class ExpressionBodyRule : Rule(RuleId("expression-body"), About()) {
     override fun beforeVisitChildNodes(
         node: ASTNode,
         autoCorrect: Boolean,
diff --git a/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/MultilineIfElseBlockRule.kt b/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/MultilineIfElseBlockRule.kt
index 090b1dc..ee4a7b0 100644
--- a/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/MultilineIfElseBlockRule.kt
+++ b/ktlint-rules/src/main/kotlin/software/aws/ktlint/rules/MultilineIfElseBlockRule.kt
@@ -4,11 +4,12 @@
  */
 package software.aws.ktlint.rules
 
-import com.pinterest.ktlint.core.Rule
-import com.pinterest.ktlint.core.ast.ElementType
+import com.pinterest.ktlint.rule.engine.core.api.ElementType
+import com.pinterest.ktlint.rule.engine.core.api.Rule
+import com.pinterest.ktlint.rule.engine.core.api.RuleId
 import org.jetbrains.kotlin.com.intellij.lang.ASTNode
 
-class MultilineIfElseBlockRule : Rule("multiline-if-else-block") {
+class MultilineIfElseBlockRule : Rule(RuleId("multiline-if-else-block"), About()) {
     override fun beforeVisitChildNodes(
         node: ASTNode,
         autoCorrect: Boolean,
diff --git a/ktlint-rules/src/main/resources/META-INF/services/com.pinterest.ktlint.core.RuleSetProviderV2 b/ktlint-rules/src/main/resources/META-INF/services/com.pinterest.ktlint.core.RuleSetProviderV3
similarity index 100%
rename from ktlint-rules/src/main/resources/META-INF/services/com.pinterest.ktlint.core.RuleSetProviderV2
rename to ktlint-rules/src/main/resources/META-INF/services/com.pinterest.ktlint.core.RuleSetProviderV3