diff --git a/packages/assets-controller/CHANGELOG.md b/packages/assets-controller/CHANGELOG.md
index c90b71f634..f3012d7243 100644
--- a/packages/assets-controller/CHANGELOG.md
+++ b/packages/assets-controller/CHANGELOG.md
@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- **BREAKING:** **SnapDataSource:** `SnapControllerSnapInstalledEvent` has been added to `SnapDataSourceAllowedEvents`. Hosts that restrict which events flow through the `AssetsController` messenger must now also delegate `SnapController:snapInstalled`; failing to do so will prevent snap chain re-discovery after install. Re-run keyring snap discovery when a new snap is installed so that snap-backed chains (Bitcoin, Solana, Tron, etc.) become available immediately after install ([#8862](https://github.com/MetaMask/core/pull/8862))
 - Non-EVM assets with a `slip44` asset namespace (e.g. Bitcoin, Solana native, TRON) are now correctly typed as `native` instead of `erc20` in `assetsInfo` ([#8811](https://github.com/MetaMask/core/pull/8811))
 - Solana SPL tokens (CAIP-19 `solana:.../token:<address>`) are now correctly typed as `spl` instead of `erc20` in `assetsInfo` ([#8811](https://github.com/MetaMask/core/pull/8811))
 
diff --git a/packages/assets-controller/src/data-sources/SnapDataSource.ts b/packages/assets-controller/src/data-sources/SnapDataSource.ts
index 7ee04140d5..c1925e5355 100644
--- a/packages/assets-controller/src/data-sources/SnapDataSource.ts
+++ b/packages/assets-controller/src/data-sources/SnapDataSource.ts
@@ -10,6 +10,7 @@ import type {
 import type {
   SnapControllerGetRunnableSnapsAction,
   SnapControllerHandleRequestAction,
+  SnapControllerSnapInstalledEvent,
 } from '@metamask/snaps-controllers';
 import type { Snap, SnapId } from '@metamask/snaps-sdk';
 import { HandlerType, SnapCaveatType } from '@metamask/snaps-utils';
@@ -144,7 +145,8 @@ const defaultSnapState: SnapDataSourceState = {
  */
 export type SnapDataSourceAllowedEvents =
   | AccountsControllerAccountBalancesUpdatedEvent
-  | PermissionControllerStateChange;
+  | PermissionControllerStateChange
+  | SnapControllerSnapInstalledEvent;
 
 export type SnapDataSourceAllowedActions =
   | SnapControllerGetRunnableSnapsAction
@@ -254,6 +256,10 @@ export class SnapDataSource extends AbstractDataSource<
       'PermissionController:stateChange',
       this.#handlePermissionStateChangeBound,
     );
+    // Rediscover keyring snaps when any snap gets installed
+    messenger.subscribe('SnapController:snapInstalled', () => {
+      this.#discoverKeyringSnaps();
+    });
   }
 
   /**