diff --git a/src/index.ts b/src/index.ts
index 365c271..38a7dc0 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -17,6 +17,7 @@ import {
     CaseDefinition,
     CaseTrajectories,
     CustomFunction,
+    CustomFunctionOptions,
     ExecutionStatusType,
     ExperimentId,
     ExperimentRunInfo,
@@ -41,6 +42,7 @@ export {
     CaseTrajectories,
     Client,
     CustomFunction,
+    CustomFunctionOptions,
     ExecutionStatus,
     ExecutionStatusType,
     ExperimentDefinition,