diff --git a/build-tools/build.gradle.kts b/build-tools/build.gradle.kts
index 0bb0cd44196..1f73a5893af 100644
--- a/build-tools/build.gradle.kts
+++ b/build-tools/build.gradle.kts
@@ -50,10 +50,6 @@ dependencies {
     implementation("org.jetbrains.kotlin:kotlin-stdlib:$kotlinVersion")
     implementation("org.jetbrains.kotlin:kotlin-reflect:$kotlinVersion")
     implementation("com.ullink.slack:simpleslackapi:1.2.0")
-    implementation("org.jetbrains.kotlinx:kotlinx-serialization-runtime:0.20.0-1.4.0-dev-5730") {
-        exclude("org.jetbrains.kotlin", "kotlin-stdlib")
-        exclude("org.jetbrains.kotlin", "kotlin-stdlib-common")
-    }
 
     implementation("io.ktor:ktor-client-auth:1.2.1")
     implementation("io.ktor:ktor-client-core:1.2.1")
@@ -102,11 +98,3 @@ compileGroovy.apply {
     classpath += project.files(compileKotlin.destinationDir)
     dependsOn(compileKotlin)
 }
-
-val kotlinCompilerPluginClasspath by configurations.getting
-
-kotlinCompilerPluginClasspath.resolutionStrategy.eachDependency {
-    if (requested.group == "org.jetbrains.kotlin" && requested.name == "kotlin-serialization") {
-        useVersion(buildKotlinVersion)
-    }
-}
\ No newline at end of file
diff --git a/build-tools/settings.gradle.kts b/build-tools/settings.gradle.kts
index 784941bed23..c34dff66182 100644
--- a/build-tools/settings.gradle.kts
+++ b/build-tools/settings.gradle.kts
@@ -16,9 +16,6 @@ pluginManagement {
             if (requested.id.id == "kotlin") {
                 useModule("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion")
             }
-            if (requested.id.id == "kotlinx-serialization") {
-                useModule("org.jetbrains.kotlin:kotlin-serialization:$kotlinVersion")
-            }
         }
     }
 }