diff --git a/desktop/src/features/profile/hooks.ts b/desktop/src/features/profile/hooks.ts
index 7a456fb259..ff7ee2edfe 100644
--- a/desktop/src/features/profile/hooks.ts
+++ b/desktop/src/features/profile/hooks.ts
@@ -46,6 +46,7 @@ import {
 } from "@/features/profile/lib/userLabelStorage";
 import { useCommunities } from "@/features/communities/useCommunities";
 import { updateCachedChannelMemberDisplayName } from "@/features/channels/channelMemberProfileCache";
+import { syncUsersBatchQueryCaches } from "@/features/profile/usersBatchCacheSync";
 
 export const profileQueryKey = ["profile"] as const;
 export const contactListQueryKey = (pubkey: string) =>
@@ -360,6 +361,7 @@ export function useUsersBatchQuery(
         if (relayUrl) {
           writeCachedUserLabels(relayUrl, fresh.profiles, fresh.missing);
         }
+        syncUsersBatchQueryCaches(queryClient, fresh);
         for (const pubkey of toFetch) {
           const summary = fresh.profiles[pubkey] ?? null;
           queryClient.setQueryData<UsersBatchEntry>(
diff --git a/desktop/src/features/profile/usersBatchCacheSync.test.mjs b/desktop/src/features/profile/usersBatchCacheSync.test.mjs
new file mode 100644
index 0000000000..eefe8d99fc
--- /dev/null
+++ b/desktop/src/features/profile/usersBatchCacheSync.test.mjs
@@ -0,0 +1,86 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { QueryClient } from "@tanstack/react-query";
+
+async function loadSubject() {
+  try {
+    return await import("./usersBatchCacheSync.ts");
+  } catch {
+    return {};
+  }
+}
+
+const ALICE = "alice-pubkey";
+const BOB = "bob-pubkey";
+
+function profile(displayName, avatarUrl) {
+  return {
+    displayName,
+    name: null,
+    avatarUrl,
+    nip05Handle: null,
+    ownerPubkey: null,
+  };
+}
+
+test("fresh profile results update every overlapping users-batch query", async () => {
+  const subject = await loadSubject();
+  assert.equal(typeof subject.syncUsersBatchQueryCaches, "function");
+
+  const queryClient = new QueryClient();
+  const originalUpdatedAt = 1_234;
+  queryClient.setQueryData(
+    ["users-batch", ALICE, BOB],
+    {
+      profiles: {},
+      missing: [ALICE, BOB],
+    },
+    { updatedAt: originalUpdatedAt },
+  );
+  queryClient.setQueryData(["users-batch", BOB], {
+    profiles: { [BOB]: profile("Bob", null) },
+    missing: [],
+  });
+
+  subject.syncUsersBatchQueryCaches(queryClient, {
+    profiles: { [ALICE]: profile("Alice", "https://cdn.example/alice.png") },
+    missing: [],
+  });
+
+  assert.deepEqual(queryClient.getQueryData(["users-batch", ALICE, BOB]), {
+    profiles: {
+      [ALICE]: profile("Alice", "https://cdn.example/alice.png"),
+    },
+    missing: [BOB],
+  });
+  assert.deepEqual(queryClient.getQueryData(["users-batch", BOB]), {
+    profiles: { [BOB]: profile("Bob", null) },
+    missing: [],
+  });
+  assert.equal(
+    queryClient.getQueryState(["users-batch", ALICE, BOB]).dataUpdatedAt,
+    originalUpdatedAt,
+  );
+});
+
+test("fresh missing results remove stale profiles from overlapping queries", async () => {
+  const subject = await loadSubject();
+  assert.equal(typeof subject.syncUsersBatchQueryCaches, "function");
+
+  const queryClient = new QueryClient();
+  queryClient.setQueryData(["users-batch", ALICE], {
+    profiles: { [ALICE]: profile("Old Alice", null) },
+    missing: [],
+  });
+
+  subject.syncUsersBatchQueryCaches(queryClient, {
+    profiles: {},
+    missing: [ALICE.toUpperCase()],
+  });
+
+  assert.deepEqual(queryClient.getQueryData(["users-batch", ALICE]), {
+    profiles: {},
+    missing: [ALICE],
+  });
+});
diff --git a/desktop/src/features/profile/usersBatchCacheSync.ts b/desktop/src/features/profile/usersBatchCacheSync.ts
new file mode 100644
index 0000000000..4be27ec11f
--- /dev/null
+++ b/desktop/src/features/profile/usersBatchCacheSync.ts
@@ -0,0 +1,69 @@
+import type { QueryClient } from "@tanstack/react-query";
+
+import type { UsersBatchResponse } from "@/shared/api/types";
+
+function normalizedPubkeySet(values: string[]): Set<string> {
+  return new Set(values.map((value) => value.toLowerCase()));
+}
+
+/** Keep long-lived aggregate profile queries in sync when another batch key
+ * refreshes one of the same people. */
+export function syncUsersBatchQueryCaches(
+  queryClient: QueryClient,
+  fresh: UsersBatchResponse,
+): void {
+  const freshProfiles = Object.fromEntries(
+    Object.entries(fresh.profiles).map(([pubkey, profile]) => [
+      pubkey.toLowerCase(),
+      profile,
+    ]),
+  );
+  const freshMissing = normalizedPubkeySet(fresh.missing);
+  const refreshedPubkeys = new Set([
+    ...Object.keys(freshProfiles),
+    ...freshMissing,
+  ]);
+  if (refreshedPubkeys.size === 0) return;
+
+  const overlappingQueries = queryClient.getQueryCache().findAll({
+    predicate: (query) =>
+      query.queryKey[0] === "users-batch" &&
+      query.queryKey.some(
+        (part) =>
+          typeof part === "string" && refreshedPubkeys.has(part.toLowerCase()),
+      ),
+  });
+
+  for (const query of overlappingQueries) {
+    const queryPubkeys = normalizedPubkeySet(
+      query.queryKey.filter(
+        (part, index): part is string => index > 0 && typeof part === "string",
+      ),
+    );
+    queryClient.setQueryData<UsersBatchResponse>(
+      query.queryKey,
+      (current) => {
+        if (!current) return current;
+
+        const profiles = { ...current.profiles };
+        const missing = normalizedPubkeySet(current.missing);
+        for (const [pubkey, profile] of Object.entries(freshProfiles)) {
+          if (!queryPubkeys.has(pubkey)) continue;
+          profiles[pubkey] = profile;
+          missing.delete(pubkey);
+        }
+        for (const pubkey of freshMissing) {
+          if (!queryPubkeys.has(pubkey)) continue;
+          delete profiles[pubkey];
+          missing.add(pubkey);
+        }
+
+        return { profiles, missing: [...missing] };
+      },
+      // This is a partial cache merge, not a successful refresh of every
+      // pubkey in the aggregate query. Preserve its freshness timestamp so
+      // another participant's result cannot postpone stale entries fetching.
+      { updatedAt: query.state.dataUpdatedAt },
+    );
+  }
+}