diff --git a/moshi-kotlin-codegen/build.gradle.kts b/moshi-kotlin-codegen/build.gradle.kts
index 9dbaf4f..810e89c 100644
--- a/moshi-kotlin-codegen/build.gradle.kts
+++ b/moshi-kotlin-codegen/build.gradle.kts
@@ -16,9 +16,7 @@ tasks.withType<KotlinCompile>().configureEach {
   kotlinOptions {
     @Suppress("SuspiciousCollectionReassignment")
     freeCompilerArgs += listOf(
-      "-opt-in=kotlin.RequiresOptIn",
       "-opt-in=com.squareup.kotlinpoet.metadata.KotlinPoetMetadataPreview",
-      "-opt-in=com.squareup.kotlinpoet.ksp.KotlinPoetKspPreview",
       "-opt-in=com.squareup.moshi.kotlin.codegen.api.InternalMoshiCodegenApi",
     )
   }
diff --git a/moshi/build.gradle.kts b/moshi/build.gradle.kts
index 58f820f..f7d3d5c 100644
--- a/moshi/build.gradle.kts
+++ b/moshi/build.gradle.kts
@@ -61,7 +61,6 @@ tasks.withType<KotlinCompile>()
   .configureEach {
     kotlinOptions {
       val toAdd = mutableListOf(
-        "-opt-in=kotlin.RequiresOptIn",
         "-opt-in=kotlin.contracts.ExperimentalContracts",
         "-Xjvm-default=all"
       )