diff --git a/superset-frontend/packages/superset-ui-core/src/time-format/TimeFormatterRegistrySingleton.ts b/superset-frontend/packages/superset-ui-core/src/time-format/TimeFormatterRegistrySingleton.ts
index becab8441ce63..2eae7a41b50d0 100644
--- a/superset-frontend/packages/superset-ui-core/src/time-format/TimeFormatterRegistrySingleton.ts
+++ b/superset-frontend/packages/superset-ui-core/src/time-format/TimeFormatterRegistrySingleton.ts
@@ -84,7 +84,7 @@ export function getTimeFormatterForGranularity(granularity?: TimeGranularity) {
 
 export function formatTime(
   formatId: string | undefined,
-  value: Date | null | undefined,
+  value: Date | number | null | undefined,
   granularity?: TimeGranularity,
 ) {
   return getTimeFormatter(formatId, granularity)(value);
diff --git a/superset-frontend/packages/superset-ui-demo/storybook/stories/superset-ui-number-format/BigNumberStories.tsx b/superset-frontend/packages/superset-ui-demo/storybook/stories/superset-ui-number-format/BigNumberStories.tsx
index f18636df4953a..df57c4ad99142 100644
--- a/superset-frontend/packages/superset-ui-demo/storybook/stories/superset-ui-number-format/BigNumberStories.tsx
+++ b/superset-frontend/packages/superset-ui-demo/storybook/stories/superset-ui-number-format/BigNumberStories.tsx
@@ -21,7 +21,7 @@ import React from 'react';
 import { formatNumber } from '@superset-ui/core';
 
 class NumberFormatValidator extends React.PureComponent {
-  state: { formatString: string; testValues: any[] } = {
+  state: { formatString: string; testValues: (number | null | undefined)[] } = {
     formatString: '.3~s',
     testValues: [
       987654321,
diff --git a/superset-frontend/packages/superset-ui-demo/storybook/stories/superset-ui-time-format/TimeFormatStories.tsx b/superset-frontend/packages/superset-ui-demo/storybook/stories/superset-ui-time-format/TimeFormatStories.tsx
index 9d8ecb66a71ab..76d95206d2d68 100644
--- a/superset-frontend/packages/superset-ui-demo/storybook/stories/superset-ui-time-format/TimeFormatStories.tsx
+++ b/superset-frontend/packages/superset-ui-demo/storybook/stories/superset-ui-time-format/TimeFormatStories.tsx
@@ -21,7 +21,10 @@ import React from 'react';
 import { formatTime } from '@superset-ui/core';
 
 class TimeFormatValidator extends React.PureComponent {
-  state: { formatString: string; testValues: any[] } = {
+  state: {
+    formatString: string;
+    testValues: (Date | number | null | undefined)[];
+  } = {
     formatString: '%Y-%m-%d %H:%M:%S',
     testValues: [
       new Date(Date.UTC(1986, 5, 14, 8, 30, 53)),