diff --git a/native/navigation/action-types.js b/native/navigation/action-types.js
--- a/native/navigation/action-types.js
+++ b/native/navigation/action-types.js
@@ -8,6 +8,7 @@
 
 // OverlayRouter
 export const clearOverlayModalsActionType = 'CLEAR_OVERLAY_MODALS';
+export const setRouteParamsActionType = 'SET_ROUTE_PARAMS';
 
 // ChatRouter
 export const clearScreensActionType = 'CLEAR_SCREENS';
diff --git a/native/navigation/overlay-router.js b/native/navigation/overlay-router.js
--- a/native/navigation/overlay-router.js
+++ b/native/navigation/overlay-router.js
@@ -7,10 +7,14 @@
   StackRouterOptions,
   StackNavigationState,
   RouterConfigOptions,
+  ScreenParams,
 } from '@react-navigation/native';
 import { StackRouter, CommonActions } from '@react-navigation/native';
 
-import { clearOverlayModalsActionType } from './action-types';
+import {
+  clearOverlayModalsActionType,
+  setRouteParamsActionType,
+} from './action-types';
 import { removeScreensFromStack } from './navigation-utils';
 
 type ClearOverlayModalsAction = {
@@ -19,13 +23,22 @@
     +keys: $ReadOnlyArray<string>,
   },
 };
+type SetRouteParamsAction = {
+  +type: 'SET_ROUTE_PARAMS',
+  +payload: {
+    +routeKey: string,
+    +params: ScreenParams,
+  },
+};
 export type OverlayRouterNavigationAction =
   | StackAction
-  | ClearOverlayModalsAction;
+  | ClearOverlayModalsAction
+  | SetRouteParamsAction;
 
 export type OverlayRouterExtraNavigationHelpers = {
   +clearOverlayModals: (keys: $ReadOnlyArray<string>) => void,
   +goBackOnce: () => void,
+  +setRouteParams: (routeKey: string, params: ScreenParams) => void,
 };
 
 function OverlayRouter(
@@ -51,6 +64,23 @@
         return removeScreensFromStack(lastState, (route: Route<>) =>
           keys.includes(route.key) ? 'remove' : 'keep',
         );
+      } else if (action.type === setRouteParamsActionType) {
+        const newRoutes = lastState.routes.map(route => {
+          if (route.key !== action.payload.routeKey || route.state) {
+            return route;
+          }
+          return {
+            ...route,
+            params: {
+              ...route.params,
+              ...action.payload.params,
+            },
+          };
+        });
+        return {
+          ...lastState,
+          routes: newRoutes,
+        };
       } else {
         return baseGetStateForAction(lastState, action, options);
       }
@@ -65,6 +95,10 @@
         ...CommonActions.goBack(),
         target: state.key,
       }),
+      setRouteParams: (routeKey: string, params: ScreenParams) => ({
+        type: setRouteParamsActionType,
+        payload: { routeKey, params },
+      }),
     },
   };
 }