diff --git a/build.gradle.kts b/build.gradle.kts
index 4df0599..a9ebd1c 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -26,6 +26,10 @@ kotlin {
             implementation(libs.bytearray)
         }
     }
+
+    compilerOptions {
+        freeCompilerArgs.add("-opt-in=kotlin.time.ExperimentalTime")
+    }
 }
 
 publishing {
diff --git a/src/commonMain/kotlin/com/infendro/otp/TOTP.kt b/src/commonMain/kotlin/com/infendro/otp/TOTP.kt
index 5a90aa1..c6c2bca 100644
--- a/src/commonMain/kotlin/com/infendro/otp/TOTP.kt
+++ b/src/commonMain/kotlin/com/infendro/otp/TOTP.kt
@@ -4,10 +4,8 @@ import com.infendro.hash.HashFunction
 import com.infendro.hash.SHA1
 import kotlin.time.Duration
 import kotlin.time.Duration.Companion.seconds
-import kotlin.time.ExperimentalTime
 import kotlin.time.Instant
 
-@ExperimentalTime
 class TOTP(
     function: HashFunction = SHA1,
     length: Int = 6,