diff --git a/extensions/markdown-language-features/src/security.ts b/extensions/markdown-language-features/src/security.ts
index 3a62eed2dbd2a..7f11d65a113a6 100644
--- a/extensions/markdown-language-features/src/security.ts
+++ b/extensions/markdown-language-features/src/security.ts
@@ -149,6 +149,7 @@ export class PreviewSecuritySelector {
 
 		if (selection.type === 'toggle') {
 			this.cspArbiter.setShouldDisableSecurityWarning(!this.cspArbiter.shouldDisableSecurityWarnings());
+			this.webviewManager.refresh();
 			return;
 		} else {
 			await this.cspArbiter.setSecurityLevelForResource(resource, selection.type);