diff --git a/lib/workers/repository/__snapshots__/dependency-dashboard.spec.ts.snap b/lib/workers/repository/__snapshots__/dependency-dashboard.spec.ts.snap
index 3ea02bff9092de78cb6c33594b40fab7a4f987c0..5623be7f0ea0167cb125c9f7af325db6ca1f69bb 100644
--- a/lib/workers/repository/__snapshots__/dependency-dashboard.spec.ts.snap
+++ b/lib/workers/repository/__snapshots__/dependency-dashboard.spec.ts.snap
@@ -1,5 +1,93 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`workers/repository/dependency-dashboard ensureDependencyDashboard() checks detected dependencies section dependency dashboard lookup warnings Dependency Lookup Warnings message in issues body 1`] = `
+"This issue lists Renovate updates and detected dependencies. Read the [Dependency Dashboard](https://docs.renovatebot.com/key-concepts/dashboard/) docs to learn more.
+
+
+---
+
+### ⚠ Dependency Lookup Warnings ⚠
+
+-   Renovate failed to look up the following dependencies: \`dependency-2\`.
+
+Files affected: \`package.json\`
+
+---
+
+
+This repository currently has no open or pending branches.
+
+## Detected dependencies
+
+<details><summary>Branch main</summary>
+<blockquote>
+
+<details><summary>npm</summary>
+<blockquote>
+
+<details><summary>package.json</summary>
+
+
+</details>
+
+</blockquote>
+</details>
+
+</blockquote>
+</details>
+
+<details><summary>Branch dev</summary>
+<blockquote>
+
+<details><summary>dockerfile</summary>
+<blockquote>
+
+<details><summary>Dockerfile</summary>
+
+ - \`ubuntu 20.04\`
+
+</details>
+
+</blockquote>
+</details>
+
+<details><summary>npm</summary>
+<blockquote>
+
+<details><summary>package.json</summary>
+
+ - \`cookie-parser ^1.4.5\`
+ - \`express ~4.17.1\`
+ - \`express-handlebars >=5.3.4\`
+ - \`geoip-lite 1.4.*\`
+ - \`nodemailer 6.7.0\`
+ - \`redis 3.1.2-3.4.0\`
+ - \`dotenv 10.0.0\`
+ - \`nodemon 2.0.14\`
+
+</details>
+
+</blockquote>
+</details>
+
+<details><summary>poetry</summary>
+<blockquote>
+
+<details><summary>pyproject.toml</summary>
+
+ - \`six <=1.3.0\`
+
+</details>
+
+</blockquote>
+</details>
+
+</blockquote>
+</details>
+
+"
+`;
+
 exports[`workers/repository/dependency-dashboard ensureDependencyDashboard() checks detected dependencies section multi base branch repo add detected dependencies to the Dependency Dashboard body 1`] = `
 "This issue lists Renovate updates and detected dependencies. Read the [Dependency Dashboard](https://docs.renovatebot.com/key-concepts/dashboard/) docs to learn more.
 
diff --git a/lib/workers/repository/dependency-dashboard.spec.ts b/lib/workers/repository/dependency-dashboard.spec.ts
index 2deacf4f168860be48cd6631bd35635597196133..d30229e0b496fb088a64b5a686794dc5b60800ff 100644
--- a/lib/workers/repository/dependency-dashboard.spec.ts
+++ b/lib/workers/repository/dependency-dashboard.spec.ts
@@ -713,6 +713,41 @@ describe('workers/repository/dependency-dashboard', () => {
           await dryRun(branches, platform);
         });
       });
+
+      describe('dependency dashboard lookup warnings', () => {
+        beforeEach(() => {
+          PackageFiles.add('main', packageFiles);
+          PackageFiles.add('dev', packageFiles);
+        });
+
+        afterEach(() => {
+          PackageFiles.clear();
+        });
+
+        it('Dependency Lookup Warnings message in issues body', async () => {
+          const branches: BranchConfig[] = [];
+          PackageFiles.add('main', {
+            npm: [{ packageFile: 'package.json', deps: [] }],
+          });
+          const dep = [
+            {
+              warnings: [{ message: 'dependency-2', topic: '' }],
+            },
+          ];
+          const packageFiles: Record<string, PackageFile[]> = {
+            npm: [{ packageFile: 'package.json', deps: dep }],
+          };
+          await dependencyDashboard.ensureDependencyDashboard(
+            config,
+            branches,
+            packageFiles
+          );
+          expect(platform.ensureIssue).toHaveBeenCalledTimes(1);
+          expect(platform.ensureIssue.mock.calls[0][0].body).toMatchSnapshot();
+          // same with dry run
+          await dryRun(branches, platform);
+        });
+      });
     });
   });
 });
diff --git a/lib/workers/repository/dependency-dashboard.ts b/lib/workers/repository/dependency-dashboard.ts
index 85fcd12dbb3d180e3acacf7f0e3f426018096cf2..720cae9ed8787e120c5eb541e3d4f226b7282a0f 100644
--- a/lib/workers/repository/dependency-dashboard.ts
+++ b/lib/workers/repository/dependency-dashboard.ts
@@ -4,10 +4,12 @@ import { nameFromLevel } from 'bunyan';
 import { GlobalConfig } from '../../config/global';
 import type { RenovateConfig } from '../../config/types';
 import { getProblems, logger } from '../../logger';
+import type { PackageFile } from '../../modules/manager/types';
 import { platform } from '../../modules/platform';
 import { regEx } from '../../util/regex';
 import * as template from '../../util/template';
 import { BranchConfig, BranchResult, SelectAllConfig } from '../types';
+import { getDepWarningsDashboard } from './errors-warnings';
 import { PackageFiles } from './package-files';
 
 interface DependencyDashboard {
@@ -102,7 +104,8 @@ function appendRepoProblems(config: RenovateConfig, issueBody: string): string {
 
 export async function ensureDependencyDashboard(
   config: SelectAllConfig,
-  allBranches: BranchConfig[]
+  allBranches: BranchConfig[],
+  packageFiles: Record<string, PackageFile[]> = {}
 ): Promise<void> {
   // legacy/migrated issue
   const reuseTitle = 'Update Dependencies (Renovate Bot)';
@@ -256,6 +259,13 @@ export async function ensureDependencyDashboard(
     }
     issueBody += '\n';
   }
+
+  const warn = getDepWarningsDashboard(packageFiles);
+  if (warn) {
+    issueBody += warn;
+    issueBody += '\n';
+  }
+
   const otherRes = [
     BranchResult.Pending,
     BranchResult.NeedsApproval,
diff --git a/lib/workers/repository/errors-warnings.spec.ts b/lib/workers/repository/errors-warnings.spec.ts
index 7398e09f3e09c57d9b02a1dab76da2490c9df5e8..80f40e19626656170c72d9ad35a2cedea0bdae0a 100644
--- a/lib/workers/repository/errors-warnings.spec.ts
+++ b/lib/workers/repository/errors-warnings.spec.ts
@@ -1,6 +1,11 @@
 import { RenovateConfig, getConfig } from '../../../test/util';
 import type { PackageFile } from '../../modules/manager/types';
-import { getDepWarningsPR, getErrors, getWarnings } from './errors-warnings';
+import {
+  getDepWarningsDashboard,
+  getDepWarningsPR,
+  getErrors,
+  getWarnings,
+} from './errors-warnings';
 
 describe('workers/repository/errors-warnings', () => {
   describe('getWarnings()', () => {
@@ -102,6 +107,67 @@ describe('workers/repository/errors-warnings', () => {
     });
   });
 
+  describe('getDepWarningsDashboard()', () => {
+    beforeEach(() => {
+      jest.resetAllMocks();
+    });
+
+    it('returns dependency dashboard warning text', () => {
+      const packageFiles: Record<string, PackageFile[]> = {
+        npm: [
+          {
+            packageFile: 'package.json',
+            deps: [
+              {
+                warnings: [{ message: 'dependency-1', topic: '' }],
+              },
+              {},
+            ],
+          },
+          {
+            packageFile: 'backend/package.json',
+            deps: [
+              {
+                warnings: [{ message: 'dependency-1', topic: '' }],
+              },
+            ],
+          },
+        ],
+        dockerfile: [
+          {
+            packageFile: 'Dockerfile',
+            deps: [
+              {
+                warnings: [{ message: 'dependency-2', topic: '' }],
+              },
+            ],
+          },
+        ],
+      };
+      const res = getDepWarningsDashboard(packageFiles);
+      expect(res).toMatchInlineSnapshot(`
+        "
+        ---
+
+        ### ⚠ Dependency Lookup Warnings ⚠
+
+        -   Renovate failed to look up the following dependencies: \`dependency-1\`, \`dependency-2\`.
+
+        Files affected: \`package.json\`, \`backend/package.json\`, \`Dockerfile\`
+
+        ---
+
+        "
+      `);
+    });
+
+    it('dependency dashboard warning returns empty string', () => {
+      const packageFiles: Record<string, PackageFile[]> = {};
+      const res = getDepWarningsDashboard(packageFiles);
+      expect(res).toBe('');
+    });
+  });
+
   describe('getErrors()', () => {
     let config: RenovateConfig;
 
diff --git a/lib/workers/repository/errors-warnings.ts b/lib/workers/repository/errors-warnings.ts
index ecd0099c16aeb8001cc803e7708774e6989798ce..eefdd8fc4b885bf6422a0274c17e2d90a823133a 100644
--- a/lib/workers/repository/errors-warnings.ts
+++ b/lib/workers/repository/errors-warnings.ts
@@ -65,10 +65,7 @@ export function getDepWarningsPR(
   if (!warnings.length) {
     return '';
   }
-  logger.debug(
-    { warnings, warningFiles },
-    'Found package lookup warnings in onboarding'
-  );
+  logger.debug({ warnings, warningFiles }, 'Found package lookup warnings');
   warningText = emojify(
     `\n---\n\n### :warning: Dependency Lookup Warnings :warning:\n\n`
   );
@@ -82,3 +79,28 @@ export function getDepWarningsPR(
     '\n\n';
   return warningText;
 }
+
+export function getDepWarningsDashboard(
+  packageFiles: Record<string, PackageFile[]>
+): string {
+  const { warnings, warningFiles } = getDepWarnings(packageFiles);
+  if (!warnings.length) {
+    return '';
+  }
+
+  const depWarnings = warnings
+    .map((w) => w.replace('Failed to look up dependency ', ''))
+    .map((dep) => '`' + dep + '`')
+    .join(', ');
+
+  logger.debug({ warnings, warningFiles }, 'Found package lookup warnings');
+  let warningText = emojify(
+    `\n---\n\n### :warning: Dependency Lookup Warnings :warning:\n\n`
+  );
+  warningText += `-   Renovate failed to look up the following dependencies: `;
+  warningText += depWarnings;
+  warningText += '.\n\nFiles affected: ';
+  warningText += warningFiles.map((f) => '`' + f + '`').join(', ');
+  warningText += '\n\n---\n\n';
+  return warningText;
+}
diff --git a/lib/workers/repository/index.ts b/lib/workers/repository/index.ts
index c176080ec5e24d9ba403c4c3fd0146ba0882534a..866a4b82eeeaca28497908089230dca3af0f3817 100644
--- a/lib/workers/repository/index.ts
+++ b/lib/workers/repository/index.ts
@@ -59,7 +59,7 @@ export async function renovateRepository(
         }
         logger.debug(`Automerged but already retried once`);
       } else {
-        await ensureDependencyDashboard(config, branches);
+        await ensureDependencyDashboard(config, branches, packageFiles);
       }
       await finaliseRepo(config, branchList);
       // TODO #7154