diff --git a/types/d3-graphviz/index.d.ts b/types/d3-graphviz/index.d.ts
index 0646df0f3b..0ccece31cf 100644
--- a/types/d3-graphviz/index.d.ts
+++ b/types/d3-graphviz/index.d.ts
@@ -221,7 +221,7 @@ declare module 'd3-graphviz' {
          * Returns the zoom behaviour of a graph. If the zoom is disable or the graph has not
          * yet been rendered then returns null.
          */
-        zoomBehavior(): ZoomBehavior<Element, any> | null;
+        zoomBehavior(): ZoomBehavior<Element, Datum> | null;
 
         /**
          * Returns the selection to which zoom behaviour has been applied. If zoom is disabled