diff --git a/extensions/snapshot/src/index.ts b/extensions/snapshot/src/index.ts
index 4c9586c8..4357e451 100644
--- a/extensions/snapshot/src/index.ts
+++ b/extensions/snapshot/src/index.ts
@@ -38,7 +38,7 @@ export default function snapshotExtension<TState extends BaseState>(options?: Pa
 
         function snapshot<TBranchState extends BaseState = TState>(branchCallback: BranchCallback<TState, TBranchState> = ((state: TState) => state) as any): Snapshot<TBranchState> {
             const snapshotBranch = branchCallback(store.state);
-            const state = Object.freeze(clone(snapshotBranch));
+            const state = Object.freeze(clone(snapshotBranch)) as TBranchState;
 
             return {
                 state,
diff --git a/extensions/transaction/src/index.ts b/extensions/transaction/src/index.ts
index 92fd8153..7bcfbc3a 100644
--- a/extensions/transaction/src/index.ts
+++ b/extensions/transaction/src/index.ts
@@ -30,7 +30,7 @@ export default function transactionExtension<TState extends BaseState>() {
 
         function transaction<TPayload>(name: string, transactor: Transactor<TPayload>): Transaction<TPayload> {
             return payload => {
-                const snapshot = clone(store.state);
+                const snapshot = clone(store.state) as ReadState<TState>;
 
                 const eventData = {
                     payload,