diff --git a/lib/reducers/user-reducer.js b/lib/reducers/user-reducer.js
--- a/lib/reducers/user-reducer.js
+++ b/lib/reducers/user-reducer.js
@@ -202,16 +202,20 @@
     const newUserInfos = _keyBy(userInfo => userInfo.id)(
       action.payload.userInfos,
     );
-    const updated = { ...state.userInfos, ...newUserInfos };
-    for (const update of action.payload.updatesResult.newUpdates) {
-      if (update.type === updateTypes.DELETE_ACCOUNT) {
-        delete updated[update.deletedUserID];
-      }
-    }
+    const updated = action.payload.updatesResult.newUpdates.reduce(
+      (reducedState, update) => {
+        const { reduceUserInfos: reduceUserInfosUpdate } =
+          updateSpecs[update.type];
+        return reduceUserInfosUpdate
+          ? reduceUserInfosUpdate(reducedState, update)
+          : reducedState;
+      },
+      { ...state.userInfos, ...newUserInfos },
+    );
     if (!_isEqual(state.userInfos)(updated)) {
       return {
+        ...state,
         userInfos: updated,
-        inconsistencyReports: state.inconsistencyReports,
       };
     }
   } else if (action.type === processServerRequestsActionType) {
diff --git a/lib/shared/updates/delete-account-spec.js b/lib/shared/updates/delete-account-spec.js
--- a/lib/shared/updates/delete-account-spec.js
+++ b/lib/shared/updates/delete-account-spec.js
@@ -3,6 +3,7 @@
 import type { UpdateSpec } from './update-spec.js';
 import type { RawThreadInfos } from '../../types/thread-types.js';
 import type { AccountDeletionUpdateInfo } from '../../types/update-types.js';
+import type { UserInfos } from '../../types/user-types.js';
 
 export const deleteAccountSpec: UpdateSpec<AccountDeletionUpdateInfo> =
   Object.freeze({
@@ -32,4 +33,12 @@
       }
       return operations;
     },
+    reduceUserInfos(state: UserInfos, update: AccountDeletionUpdateInfo) {
+      const { deletedUserID } = update;
+      if (!state[deletedUserID]) {
+        return state;
+      }
+      const { [deletedUserID]: deleted, ...rest } = state;
+      return rest;
+    },
   });
diff --git a/lib/shared/updates/update-spec.js b/lib/shared/updates/update-spec.js
--- a/lib/shared/updates/update-spec.js
+++ b/lib/shared/updates/update-spec.js
@@ -4,7 +4,7 @@
 import type { RawEntryInfo } from '../../types/entry-types.js';
 import type { RawThreadInfos } from '../../types/thread-types.js';
 import type { ClientUpdateInfo } from '../../types/update-types.js';
-import type { CurrentUserInfo } from '../../types/user-types.js';
+import type { CurrentUserInfo, UserInfos } from '../../types/user-types.js';
 
 export type UpdateSpec<UpdateInfo: ClientUpdateInfo> = {
   +generateOpsForThreadUpdates?: (
@@ -20,4 +20,5 @@
     state: ?CurrentUserInfo,
     update: UpdateInfo,
   ) => ?CurrentUserInfo,
+  +reduceUserInfos?: (state: UserInfos, update: UpdateInfo) => UserInfos,
 };