diff --git a/workflow-core/build.gradle.kts b/workflow-core/build.gradle.kts
index c26f453fa..e03ba149f 100644
--- a/workflow-core/build.gradle.kts
+++ b/workflow-core/build.gradle.kts
@@ -14,7 +14,7 @@ kotlin {
     jvm { withJava() }
   }
   if (targets == "kmp" || targets == "js") {
-    js { browser() }
+    js(IR) { browser() }
   }
 }
 
diff --git a/workflow-runtime/build.gradle.kts b/workflow-runtime/build.gradle.kts
index b7013aba7..6d4ea4339 100644
--- a/workflow-runtime/build.gradle.kts
+++ b/workflow-runtime/build.gradle.kts
@@ -14,7 +14,7 @@ kotlin {
     jvm {}
   }
   if (targets == "kmp" || targets == "js") {
-    js { browser() }
+    js(IR) { browser() }
   }
 }