diff --git a/src/components/CodeEditor.tsx b/src/components/CodeEditor.tsx
index 7aa9866e6..19edc58ff 100644
--- a/src/components/CodeEditor.tsx
+++ b/src/components/CodeEditor.tsx
@@ -63,7 +63,7 @@ export class CodeEditor extends React.Component<CodeEditorProps, CodeEditorState
     });
   }
 
-  render() {
+  override render() {
     this.updateHighlight();
 
     return (
@@ -84,7 +84,7 @@ export class CodeEditor extends React.Component<CodeEditorProps, CodeEditorState
     }
   }
 
-  componentWillUnmount() {
+  override componentWillUnmount() {
     for (const disposable of this.disposables) {
       disposable.dispose();
     }
diff --git a/src/components/ErrorBoundary.tsx b/src/components/ErrorBoundary.tsx
index c68ab3feb..a8b0a1fd7 100644
--- a/src/components/ErrorBoundary.tsx
+++ b/src/components/ErrorBoundary.tsx
@@ -22,7 +22,7 @@ export class ErrorBoundary extends React.Component<React.PropsWithChildren<Error
     this.state = { hasError: false };
   }
 
-  componentDidCatch(error: any, errorInfo: any) {
+  override componentDidCatch(error: any, errorInfo: any) {
     this.setState({ hasError: true, error, errorInfo });
     console.error(error);
     if (this.props.getResetHash != null) {
@@ -30,7 +30,7 @@ export class ErrorBoundary extends React.Component<React.PropsWithChildren<Error
     }
   }
 
-  render() {
+  override render() {
     if (this.getHasError()) {
       return (
         <div>