diff --git a/src/olcs.ts b/src/olcs.ts
index 31900081f..cd49fd9d8 100644
--- a/src/olcs.ts
+++ b/src/olcs.ts
@@ -4,6 +4,7 @@ export default OLCesium;
 export {default as AbstractSynchronizer} from './olcs/AbstractSynchronizer';
 export {default as RasterSynchronizer} from './olcs/RasterSynchronizer';
 export {default as VectorSynchronizer} from './olcs/VectorSynchronizer';
+export {default as OverlaySynchronizer} from './olcs/OverlaySynchronizer';
 
 export {default as FeatureConverter} from './olcs/FeatureConverter';
 export {default as OLCSCamera} from './olcs/Camera';