diff --git a/judgels-client/src/components/RegradeAllButton/RegradeAllButton.jsx b/judgels-client/src/components/RegradeAllButton/RegradeAllButton.jsx
index 376fd2d1a..352ca7a41 100644
--- a/judgels-client/src/components/RegradeAllButton/RegradeAllButton.jsx
+++ b/judgels-client/src/components/RegradeAllButton/RegradeAllButton.jsx
@@ -1,9 +1,9 @@
 import { Button, Intent } from '@blueprintjs/core';
 import { Refresh } from '@blueprintjs/icons';
 
-export function RegradeAllButton({ onRegradeAll }) {
+export function RegradeAllButton({ onRegradeAll, isRegradingAll }) {
   return (
-    <Button intent={Intent.PRIMARY} icon={<Refresh />} onClick={onRegradeAll}>
+    <Button intent={Intent.PRIMARY} icon={<Refresh />} onClick={onRegradeAll} loading={isRegradingAll}>
       Regrade all pages
     </Button>
   );
diff --git a/judgels-client/src/routes/contests/contests/single/submissions/Programming/ContestSubmissionsPage/ContestSubmissionsPage.jsx b/judgels-client/src/routes/contests/contests/single/submissions/Programming/ContestSubmissionsPage/ContestSubmissionsPage.jsx
index fad0a50ed..8fbe8a7ba 100644
--- a/judgels-client/src/routes/contests/contests/single/submissions/Programming/ContestSubmissionsPage/ContestSubmissionsPage.jsx
+++ b/judgels-client/src/routes/contests/contests/single/submissions/Programming/ContestSubmissionsPage/ContestSubmissionsPage.jsx
@@ -31,6 +31,7 @@ export class ContestSubmissionsPage extends Component {
       response: undefined,
       filter: { username, problemAlias },
       isFilterLoading: false,
+      isRegradingAll: false,
     };
   }
 
@@ -70,7 +71,7 @@ export class ContestSubmissionsPage extends Component {
     if (!this.state.response || !this.state.response.config.canManage) {
       return null;
     }
-    return <RegradeAllButton onRegradeAll={this.onRegradeAll} />;
+    return <RegradeAllButton onRegradeAll={this.onRegradeAll} isRegradingAll={this.state.isRegradingAll} />;
   };
 
   renderFilterWidget = () => {
@@ -154,7 +155,10 @@ export class ContestSubmissionsPage extends Component {
   onRegradeAll = async () => {
     if (reallyConfirm('Regrade all submissions in all pages for the current filter?')) {
       const { username, problemAlias } = this.state.filter;
+
+      this.setState({ isRegradingAll: true });
       await this.props.onRegradeAll(this.props.contest.jid, username, problemAlias);
+      this.setState({ isRegradingAll: false });
       const queries = parse(this.props.location.search);
       await this.refreshSubmissions(username, problemAlias, queries.page);
     }