diff --git a/instrumentation-api/src/main/java/io/opentelemetry/instrumentation/api/config/ExperimentalConfig.java b/instrumentation-api/src/main/java/io/opentelemetry/instrumentation/api/config/ExperimentalConfig.java
index aa50ed302a12..4b3c21089ea2 100644
--- a/instrumentation-api/src/main/java/io/opentelemetry/instrumentation/api/config/ExperimentalConfig.java
+++ b/instrumentation-api/src/main/java/io/opentelemetry/instrumentation/api/config/ExperimentalConfig.java
@@ -5,6 +5,9 @@
 
 package io.opentelemetry.instrumentation.api.config;
 
+import io.opentelemetry.instrumentation.api.annotations.UnstableApi;
+
+@UnstableApi
 public final class ExperimentalConfig {
 
   private static final ExperimentalConfig instance = new ExperimentalConfig(Config.get());