diff --git a/buildSrc/src/main/kotlin/Versions.kt b/buildSrc/src/main/kotlin/Versions.kt
index c45828ac..7a12612c 100644
--- a/buildSrc/src/main/kotlin/Versions.kt
+++ b/buildSrc/src/main/kotlin/Versions.kt
@@ -2,7 +2,7 @@ object Versions {
     const val version = "0.13.0"
 
     const val kotlin = "1.8.0"
-    const val serialization = "1.5.0"
+    const val serialization = "1.6.3"
 
     const val mavenCentralPublish = "1.0.0-dev-3"
 }
diff --git a/yamlkt/build.gradle.kts b/yamlkt/build.gradle.kts
index 13b6ad57..eff32813 100644
--- a/yamlkt/build.gradle.kts
+++ b/yamlkt/build.gradle.kts
@@ -45,7 +45,7 @@ kotlin {
             }
         } else {
             // https://kotlinlang.org/docs/native-target-support.html
-            // Updated for Kotlin 1.8.0, serialization 1.5.0
+            // Updated for Kotlin 1.8.0, serialization 1.6.3
             //kotlinx-serialization-core-iosarm32/                             -         -      
             //kotlinx-serialization-core-iosarm64/                             -         -      
             //kotlinx-serialization-core-iossimulatorarm64/                    -         -      
@@ -66,6 +66,7 @@ kotlin {
             //kotlinx-serialization-core-watchosarm32/                         -         -      
             //kotlinx-serialization-core-watchosarm64/                         -         -      
             //kotlinx-serialization-core-watchossimulatora.../                 -         -      
+            //kotlinx-serialization-core-watchosdevicearm64/                   -         -      
             //kotlinx-serialization-core-watchosx64/                           -         -      
             //kotlinx-serialization-core-watchosx86/            
             // Commented ones are not supported by kotlinx-coroutines-core
@@ -79,7 +80,7 @@ kotlin {
 
                 // Tier 2:
                 "linuxArm64",
-//                "watchosSimulatorArm64",
+                "watchosSimulatorArm64",
                 "watchosX64w",
                 "wwatchosArm32",
                 "watchosArm64",
@@ -94,7 +95,7 @@ kotlin {
 //                "androidNativeX86",
 //                "androidNativeX64",
                 "mingwX64",
-//                "watchosDeviceArm64",
+                "watchosDeviceArm64",
 
                 // Deprecated:
                 "iosArm32",