diff --git a/src/index.ts b/src/index.ts
index 5b7f335..8fdf403 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -2,3 +2,7 @@ export { generateZwo } from "./generateZwo";
 export { parse } from "./parser";
 export { stats } from "./stats";
 export { parseCliOptions } from "./parseCliOptions";
+
+export { Workout, Interval, Comment } from "./ast";
+export { Duration } from "./Duration";
+export { Intensity, IntensityRange, FreeIntensity } from "./Intensity";