diff --git a/docs/apidiffs/current_vs_latest/opentelemetry-extension-kotlin.txt b/docs/apidiffs/current_vs_latest/opentelemetry-extension-kotlin.txt
index df26146497b..1945e8c996d 100644
--- a/docs/apidiffs/current_vs_latest/opentelemetry-extension-kotlin.txt
+++ b/docs/apidiffs/current_vs_latest/opentelemetry-extension-kotlin.txt
@@ -1,2 +1,9 @@
 Comparing source compatibility of  against 
-No changes.
\ No newline at end of file
+===  UNCHANGED CLASS: PUBLIC FINAL io.opentelemetry.extension.kotlin.ContextExtensionsKt  (not serializable)
+	===  CLASS FILE FORMAT VERSION: 52.0 <- 52.0
+	***  MODIFIED ANNOTATION: kotlin.Metadata
+		===  UNCHANGED ELEMENT: xi=48
+		***  MODIFIED ELEMENT: mv=1,6,0 (<- 1,9,0)
+		===  UNCHANGED ELEMENT: k=2
+		===  UNCHANGED ELEMENT: d1=��&#xA;�&#xA;���&#xA;���&#xA;���&#xA;����&#xA;����0�*�0��&#xA;����0�*�0��&#xA;����0�*�0�¨��
+		===  UNCHANGED ELEMENT: d2=asContextElement,Lkotlin/coroutines/CoroutineContext;,Lio/opentelemetry/context/Context;,Lio/opentelemetry/context/ImplicitContextKeyed;,getOpenTelemetryContext,opentelemetry-extension-kotlin
diff --git a/extensions/kotlin/build.gradle.kts b/extensions/kotlin/build.gradle.kts
index 14a43ef1499..7409cb49f29 100644
--- a/extensions/kotlin/build.gradle.kts
+++ b/extensions/kotlin/build.gradle.kts
@@ -48,6 +48,7 @@ tasks {
   withType(KotlinCompile::class) {
     kotlinOptions {
       jvmTarget = "1.8"
+      languageVersion = "1.6"
     }
   }