diff --git a/lib/reducers/integrity-reducer.js b/lib/reducers/integrity-reducer.js
--- a/lib/reducers/integrity-reducer.js
+++ b/lib/reducers/integrity-reducer.js
@@ -8,6 +8,7 @@
   logInActionTypes,
   keyserverRegisterActionTypes,
 } from '../actions/user-actions.js';
+import { integrityStoreOpsHandlers } from '../ops/integrity-store-ops.js';
 import type { ThreadStoreOperation } from '../ops/thread-store-ops';
 import type { IntegrityStore } from '../types/integrity-types';
 import type { RawThreadInfo } from '../types/minimally-encoded-thread-permissions-types.js';
@@ -15,6 +16,8 @@
 import { fullStateSyncActionType } from '../types/socket-types.js';
 import { hash } from '../utils/objects.js';
 
+const { processStoreOperations: processStoreOps } = integrityStoreOpsHandlers;
+
 function reduceIntegrityStore(
   state: IntegrityStore,
   action: BaseAction,
@@ -45,14 +48,12 @@
           .filter(([, info]) => !!info)
           .map(([id, info]) => [id, hash(info)]),
       );
-
-      newState = {
-        ...newState,
-        threadHashes: {
-          ...newState.threadHashes,
-          ...newThreadHashes,
-        },
+      const replaceOperation = {
+        type: 'replace_integrity_thread_hashes',
+        payload: { threadHashes: newThreadHashes },
       };
+
+      newState = processStoreOps(state, [replaceOperation]);
     }
     if (action.payload.threadHashingStatus) {
       newState = {