diff --git a/packages/react-dock/src/Dock.tsx b/packages/react-dock/src/Dock.tsx
index 25b55c9f..2889032a 100644
--- a/packages/react-dock/src/Dock.tsx
+++ b/packages/react-dock/src/Dock.tsx
@@ -227,7 +227,7 @@ interface Props {
   dockStyle?: React.CSSProperties | null;
   dockHiddenStyle?: React.CSSProperties | null;
   duration: number;
-  children: React.FunctionComponent<{
+  children?: React.FunctionComponent<{
     position: 'left' | 'right' | 'top' | 'bottom';
     isResizing: boolean | undefined;
     size: number;
diff --git a/packages/react-dock/tsconfig.json b/packages/react-dock/tsconfig.json
index 7b7d1492..391ad640 100644
--- a/packages/react-dock/tsconfig.json
+++ b/packages/react-dock/tsconfig.json
@@ -1,7 +1,9 @@
 {
   "extends": "../../tsconfig.react.base.json",
   "compilerOptions": {
-    "outDir": "lib"
+    "outDir": "lib",
+    // See https://github.com/DefinitelyTyped/DefinitelyTyped/issues/33311
+    "types": ["jest"]
   },
   "include": ["src"]
 }