diff --git a/UNRELEASED.md b/UNRELEASED.md
index c9f71570bef..be6f7362a56 100644
--- a/UNRELEASED.md
+++ b/UNRELEASED.md
@@ -17,6 +17,7 @@ Use [the changelog guidelines](https://git.io/polaris-changelog-guidelines) to f
 
 - Fixed vertical alignment of Tabs disclosure activator ([#2087](https://github.com/Shopify/polaris-react/pull/2087))
 - Fixed `Modal` setting an invalid `id` on `aria-labelledby` when no `title` is set ([#2115](https://github.com/Shopify/polaris-react/pull/2115))
+- Fixed error warnings in `Card` and `RollupActions` tests ([#2125](https://github.com/Shopify/polaris-react/pull/2125))
 
 ### Documentation
 
diff --git a/src/components/ActionMenu/components/RollupActions/tests/RollupActions.test.tsx b/src/components/ActionMenu/components/RollupActions/tests/RollupActions.test.tsx
index a1db3f9e5b9..ace7e188f0b 100644
--- a/src/components/ActionMenu/components/RollupActions/tests/RollupActions.test.tsx
+++ b/src/components/ActionMenu/components/RollupActions/tests/RollupActions.test.tsx
@@ -1,7 +1,7 @@
 import React from 'react';
 import {ReactWrapper} from 'enzyme';
 import {HorizontalDotsMinor} from '@shopify/polaris-icons';
-import {mountWithAppProvider, trigger} from 'test-utilities/legacy';
+import {mountWithAppProvider, trigger, act} from 'test-utilities/legacy';
 
 import {Button, Popover} from 'components';
 
@@ -60,7 +60,10 @@ describe('<RollupActions />', () => {
       expect(popoverComponent.prop('active')).toBe(true);
 
       const firstActionListItem = wrapper.find(ActionListItem).first();
-      trigger(firstActionListItem, 'onAction');
+      act(() => {
+        trigger(firstActionListItem, 'onAction');
+      });
+      popoverComponent.update();
 
       popoverComponent = wrapper.find(Popover);
       expect(popoverComponent.prop('active')).toBe(false);
@@ -107,5 +110,8 @@ function findPopoverActivator(wrapper: Wrapper) {
 
 function activatePopover(wrapper: Wrapper) {
   const activator = findPopoverActivator(wrapper);
-  trigger(activator, 'onClick');
+  act(() => {
+    trigger(activator, 'onClick');
+  });
+  wrapper.update();
 }
diff --git a/src/components/Card/tests/Card.test.tsx b/src/components/Card/tests/Card.test.tsx
index f2c492201a2..957b7fba6c8 100644
--- a/src/components/Card/tests/Card.test.tsx
+++ b/src/components/Card/tests/Card.test.tsx
@@ -3,6 +3,7 @@ import {
   mountWithAppProvider,
   trigger,
   findByTestID,
+  act,
 } from 'test-utilities/legacy';
 import {Card, Badge, Button, Popover, ActionList} from 'components';
 import {WithinContentContext} from '../../../utilities/within-content-context';
@@ -140,8 +141,10 @@ describe('<Card />', () => {
       expect(popover).toHaveLength(1);
       expect(popover.prop('active')).toBe(false);
 
-      trigger(disclosureButton, 'onClick');
-
+      act(() => {
+        trigger(disclosureButton, 'onClick');
+      });
+      card.update();
       expect(
         card
           .find(Popover)