diff --git a/lib/workers/pr.js b/lib/workers/pr.js
index c99c1ea3d96b4ff4a2badb0dd983c7ef5d3df4e6..8432e1263de1f8ae33f305d1aa4e6f332dd4b902 100644
--- a/lib/workers/pr.js
+++ b/lib/workers/pr.js
@@ -57,11 +57,17 @@ async function ensurePr(upgradeConfig) {
     if (config.labels.length > 0) {
       await config.api.addLabels(pr.number, config.labels);
     }
-    if (config.assignees.length > 0) {
-      await config.api.addAssignees(pr.number, config.assignees);
-    }
-    if (config.reviewers.length > 0) {
-      await config.api.addReviewers(pr.number, config.reviewers);
+    // Don't assign or review if automerging
+    if (config.automerge === 'none' ||
+      (config.automerge === 'minor' && config.upgradeType !== 'minor')) {
+      if (config.assignees.length > 0) {
+        await config.api.addAssignees(pr.number, config.assignees);
+      }
+      if (config.reviewers.length > 0) {
+        await config.api.addReviewers(pr.number, config.reviewers);
+      }
+    } else {
+      logger.debug(`Skipping assignees and reviewers as automerge=${config.automerge}`);
     }
     logger.info(`Created ${pr.displayNumber}`);
     return pr;
diff --git a/test/workers/pr.spec.js b/test/workers/pr.spec.js
index 3411fa864d8cc22b91165c5f11e0a885142cc1ce..ee785202ad07a3414b9d8949dd541a78025f8c81 100644
--- a/test/workers/pr.spec.js
+++ b/test/workers/pr.spec.js
@@ -149,6 +149,44 @@ describe('workers/pr', () => {
       expect(config.api.addAssignees.mock.calls.length).toBe(1);
       expect(config.api.addReviewers.mock.calls.length).toBe(1);
     });
+    it('should not add assignees and reviewers to new PR if automerging any', async () => {
+      config.api.getBranchPr = jest.fn();
+      config.api.addAssignees = jest.fn();
+      config.api.addReviewers = jest.fn();
+      config.assignees = ['bar'];
+      config.reviewers = ['baz'];
+      config.automerge = 'any';
+      const pr = await prWorker.ensurePr(config);
+      expect(pr).toMatchObject({ displayNumber: 'New Pull Request' });
+      expect(config.api.addAssignees.mock.calls.length).toBe(0);
+      expect(config.api.addReviewers.mock.calls.length).toBe(0);
+    });
+    it('should not add assignees and reviewers to new PR if automerging minor', async () => {
+      config.api.getBranchPr = jest.fn();
+      config.api.addAssignees = jest.fn();
+      config.api.addReviewers = jest.fn();
+      config.assignees = ['bar'];
+      config.reviewers = ['baz'];
+      config.upgradeType = 'minor';
+      config.automerge = 'minor';
+      const pr = await prWorker.ensurePr(config);
+      expect(pr).toMatchObject({ displayNumber: 'New Pull Request' });
+      expect(config.api.addAssignees.mock.calls.length).toBe(0);
+      expect(config.api.addReviewers.mock.calls.length).toBe(0);
+    });
+    it('should add assignees and reviewers to new PR if automerging minor and its major', async () => {
+      config.api.getBranchPr = jest.fn();
+      config.api.addAssignees = jest.fn();
+      config.api.addReviewers = jest.fn();
+      config.assignees = ['bar'];
+      config.reviewers = ['baz'];
+      config.upgradeType = 'major';
+      config.automerge = 'minor';
+      const pr = await prWorker.ensurePr(config);
+      expect(pr).toMatchObject({ displayNumber: 'New Pull Request' });
+      expect(config.api.addAssignees.mock.calls.length).toBe(1);
+      expect(config.api.addReviewers.mock.calls.length).toBe(1);
+    });
     it('should return unmodified existing PR', async () => {
       config.depName = 'dummy';
       config.currentVersion = '1.0.0';