diff --git a/.editorconfig b/.editorconfig
index 91fe5a0e..b7abc6a7 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -1,3 +1,15 @@
 [*.{kt,kts}]
 ij_kotlin_allow_trailing_comma = true
 ij_kotlin_allow_trailing_comma_on_call_site = true
+
+ktlint_standard_function-signature = disabled
+ktlint_standard_no-blank-line-in-list = disabled
+ktlint_standard_no-empty-first-line-in-class-body = disabled
+
+# `string-template-indent` is disabled because it depends on `multiline-expression-wrapping`.
+ktlint_standard_multiline-expression-wrapping = disabled
+ktlint_standard_string-template-indent = disabled
+
+# `if-else-wrapping` is disabled because it depends on `discouraged-comment-location`.
+ktlint_standard_discouraged-comment-location = disabled
+ktlint_standard_if-else-wrapping = disabled
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index b15ab41b..dc0cefcd 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -15,6 +15,6 @@ binary-compatibility-validator = { id = "binary-compatibility-validator", versio
 dokka = { id = "org.jetbrains.dokka", version = "1.9.10" }
 kotlin-js = { id = "org.jetbrains.kotlin.js", version.ref = "kotlin" }
 kotlin-multiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref = "kotlin" }
-kotlinter = { id = "org.jmailen.kotlinter", version = "3.16.0" }
+kotlinter = { id = "org.jmailen.kotlinter", version = "4.0.0" }
 kotlinx-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin" }
 maven-publish = { id = "com.vanniktech.maven.publish", version = "0.25.3" }
diff --git a/koap/src/commonMain/kotlin/ByteArrayReader.kt b/koap/src/commonMain/kotlin/ByteArrayReader.kt
index ae21541e..52f5ec54 100644
--- a/koap/src/commonMain/kotlin/ByteArrayReader.kt
+++ b/koap/src/commonMain/kotlin/ByteArrayReader.kt
@@ -26,6 +26,7 @@ internal class ByteArrayReader(
 ) {
 
     var index = startIndex
+
     fun exhausted(): Boolean = index >= endIndex
 
     private fun checkIndex() {
diff --git a/koap/src/commonMain/kotlin/Decoder.kt b/koap/src/commonMain/kotlin/Decoder.kt
index 08051142..718eb79a 100644
--- a/koap/src/commonMain/kotlin/Decoder.kt
+++ b/koap/src/commonMain/kotlin/Decoder.kt
@@ -451,6 +451,7 @@ private fun Int.toCode(): Message.Code = when (this) {
     165 -> ProxyingNotSupported     // 5.05
 
     else -> {
+        @Suppress("ktlint:standard:property-naming") // ktlint doesn't properly handle the ticks.
         val `class` = (this shr 5) and 0b111
         val detail = this and 0b11111
         Message.Code.Raw(`class`, detail)
diff --git a/koap/src/commonMain/kotlin/Encoder.kt b/koap/src/commonMain/kotlin/Encoder.kt
index a2244a18..9bbc5599 100644
--- a/koap/src/commonMain/kotlin/Encoder.kt
+++ b/koap/src/commonMain/kotlin/Encoder.kt
@@ -337,7 +337,9 @@ internal fun BufferedSink.writeToken(token: Long) {
 }
 
 private fun BufferedSink.writeByte(byte: Long) = writeByte(byte.toInt())
+
 private fun BufferedSink.writeShort(short: Long) = writeShort(short.toInt())
+
 private fun BufferedSink.writeInt(int: Long) = writeInt(int.toInt())
 
 // Type (T): 2-bit unsigned integer
diff --git a/koap/src/commonMain/kotlin/Message.kt b/koap/src/commonMain/kotlin/Message.kt
index 2f985463..551027b5 100644
--- a/koap/src/commonMain/kotlin/Message.kt
+++ b/koap/src/commonMain/kotlin/Message.kt
@@ -336,6 +336,7 @@ sealed class Message {
      */
     sealed class Code {
 
+        @Suppress("ktlint:standard:property-naming") // ktlint doesn't properly handle the ticks.
         abstract val `class`: Int
         abstract val detail: Int