diff --git a/src/server/shared/updateCenterReminder.ts b/src/server/shared/updateCenterReminder.ts
index 1eb384d..1387b49 100644
--- a/src/server/shared/updateCenterReminder.ts
+++ b/src/server/shared/updateCenterReminder.ts
@@ -34,10 +34,18 @@ function normalizeStableTag(value?: string | null): string {
   return normalizeStableVersion(value);
 }
 
-function hasSameStableTag(left?: string | null, right?: string | null): boolean {
-  const normalizedLeft = normalizeStableTag(left);
-  const normalizedRight = normalizeStableTag(right);
-  return !!normalizedLeft && normalizedLeft === normalizedRight;
+function hasSameImageTag(left?: string | null, right?: string | null): boolean {
+  const rawLeft = normalizeString(left);
+  const rawRight = normalizeString(right);
+  if (!rawLeft || !rawRight) return false;
+
+  const stableLeft = normalizeStableTag(left);
+  const stableRight = normalizeStableTag(right);
+  if (stableLeft && stableRight) {
+    return stableLeft === stableRight;
+  }
+
+  return rawLeft === rawRight;
 }
 
 export function normalizeStableVersion(value?: string | null): string {
@@ -76,7 +84,7 @@ export function isSameImageTarget(
     return currentDigest === targetDigest;
   }
 
-  return hasSameStableTag(current?.imageTag, target.tag);
+  return hasSameImageTag(current?.imageTag, target.tag);
 }
 
 export function buildUpdateReminderCandidateKey(
@@ -138,7 +146,7 @@ export function resolveUpdateReminderCandidate(input: {
   }
 
   const helperDigest = normalizeDigest(input.helper?.imageDigest);
-  if (dockerDigest && helperDigest && hasSameStableTag(input.helper?.imageTag, dockerTag) && helperDigest !== dockerDigest) {
+  if (dockerDigest && helperDigest && hasSameImageTag(input.helper?.imageTag, dockerTag) && helperDigest !== dockerDigest) {
     return {
       source: 'docker-hub-tag',
       kind: 'new-digest',
diff --git a/src/shared/updateCenterReminder.test.ts b/src/shared/updateCenterReminder.test.ts
index db19aa5..fc2bdbb 100644
--- a/src/shared/updateCenterReminder.test.ts
+++ b/src/shared/updateCenterReminder.test.ts
@@ -73,6 +73,27 @@ describe('updateCenterReminder shared logic', () => {
     }));
   });
 
+  it('treats alias tags like latest as digest-tracked targets when the digest changes', () => {
+    expect(resolveUpdateReminderCandidate({
+      currentVersion: '1.2.3',
+      helper: {
+        imageTag: 'latest',
+        imageDigest: 'sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
+      },
+      githubRelease: null,
+      dockerHubTag: {
+        normalizedVersion: 'latest',
+        displayVersion: 'latest @ sha256:bbbbbbbbbbbb',
+        tagName: 'latest',
+        digest: 'sha256:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
+      },
+    })).toEqual(expect.objectContaining({
+      source: 'docker-hub-tag',
+      kind: 'new-digest',
+      candidateKey: 'docker-hub-tag:latest@sha256:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
+    }));
+  });
+
   it('does not return an older GitHub candidate when the helper is already ahead of it', () => {
     expect(resolveUpdateReminderCandidate({
       currentVersion: '1.2.3',
diff --git a/src/web/pages/helpers/updateCenterPresentation.test.ts b/src/web/pages/helpers/updateCenterPresentation.test.ts
index 7eb41a5..e517543 100644
--- a/src/web/pages/helpers/updateCenterPresentation.test.ts
+++ b/src/web/pages/helpers/updateCenterPresentation.test.ts
@@ -61,6 +61,27 @@ describe('updateCenterPresentation', () => {
     expect(state.canDeploy).toBe(true);
   });
 
+  it('treats alias tags like latest as a new digest deploy target when the digest changes', () => {
+    const state = describeDockerDeployState({
+      enabled: true,
+      helperHealthy: true,
+      currentVersion: '1.2.3',
+      helper: {
+        imageTag: 'latest',
+        imageDigest: 'sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
+      },
+      candidate: {
+        normalizedVersion: 'latest',
+        tagName: 'latest',
+        digest: 'sha256:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
+      },
+    });
+
+    expect(state.kind).toBe('new-digest');
+    expect(state.canDeploy).toBe(true);
+    expect(state.badgeLabel).toBe('发现新 digest');
+  });
+
   it('does not advertise an older GitHub reminder when the helper is already ahead', () => {
     expect(buildUpdateReminder({
       currentVersion: '1.2.3',