diff --git a/.gitignore b/.gitignore
index a6d3486..fca9069 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 .gradle
 build/
 .cxx
+.kotlin
 
 # this file is local to the dev environment and must not be pushed!
 local.properties
@@ -24,23 +25,8 @@ gradle-app.setting
 *.class
 *.log
 
-# sbt specific
-.cache/
-.history/
-.lib/
-dist/*
-target/
-lib_managed/
-src_managed/
-project/boot/
-project/plugins/project/
-
-# Scala-IDE specific
-.scala_dependencies
-.worksheet
-
 .idea
 *.iml
 target/
 project/target
-DeleteMe*.scala
+
diff --git a/buildSrc/src/main/kotlin/Versions.kt b/buildSrc/src/main/kotlin/Versions.kt
index 94ea9bf..caa3af8 100644
--- a/buildSrc/src/main/kotlin/Versions.kt
+++ b/buildSrc/src/main/kotlin/Versions.kt
@@ -1,9 +1,9 @@
 object Versions {
-    val kotlin = "1.9.23"
+    val kotlin = "2.0.20"
     val lightningKmp = "1.7.3-FEECREDIT-11"
     val sqlDelight = "2.0.1"
-    val okio = "3.8.0"
-    val clikt = "4.2.2"
-    val ktor = "2.3.8"
+    val okio = "3.9.1"
+    val clikt = "4.4.0"
+    val ktor = "2.3.12"
     fun ktor(module: String) = "io.ktor:ktor-$module:$ktor"
 }
\ No newline at end of file
diff --git a/src/commonMain/kotlin/fr/acinq/lightning/bin/json/JsonSerializers.kt b/src/commonMain/kotlin/fr/acinq/lightning/bin/json/JsonSerializers.kt
index 22819c2..2cfd4bb 100644
--- a/src/commonMain/kotlin/fr/acinq/lightning/bin/json/JsonSerializers.kt
+++ b/src/commonMain/kotlin/fr/acinq/lightning/bin/json/JsonSerializers.kt
@@ -40,7 +40,7 @@ import kotlinx.serialization.UseSerializers
 sealed class ApiType {
 
     @Serializable
-    data class Channel internal constructor(
+    data class Channel(
         val state: String,
         val channelId: ByteVector32? = null,
         val balanceSat: Satoshi? = null,