diff --git a/build-logic/convention/src/main/kotlin/com/google/samples/apps/nowinandroid/KotlinAndroid.kt b/build-logic/convention/src/main/kotlin/com/google/samples/apps/nowinandroid/KotlinAndroid.kt
index 04ee4e56e..b453cf722 100644
--- a/build-logic/convention/src/main/kotlin/com/google/samples/apps/nowinandroid/KotlinAndroid.kt
+++ b/build-logic/convention/src/main/kotlin/com/google/samples/apps/nowinandroid/KotlinAndroid.kt
@@ -83,7 +83,6 @@ private fun Project.configureKotlin() {
             val warningsAsErrors: String? by project
             allWarningsAsErrors = warningsAsErrors.toBoolean()
             freeCompilerArgs = freeCompilerArgs + listOf(
-                "-opt-in=kotlin.RequiresOptIn",
                 // Enable experimental coroutines APIs, including Flow
                 "-opt-in=kotlinx.coroutines.ExperimentalCoroutinesApi",
                 "-opt-in=kotlinx.coroutines.FlowPreview",