diff --git a/src/index.ts b/src/index.ts
index 6e993fc..ad8dff8 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,3 +1,3 @@
-import { Primitives } from "./Primitives";
+import { ISODateTime, Primitives } from "./Primitives";
 
-export { Primitives };
+export { ISODateTime, Primitives };