diff --git a/src/vs/workbench/contrib/extensions/browser/extensionsWorkbenchService.ts b/src/vs/workbench/contrib/extensions/browser/extensionsWorkbenchService.ts
index 2b0a0fa..499cff4 100644
--- a/src/vs/workbench/contrib/extensions/browser/extensionsWorkbenchService.ts
+++ b/src/vs/workbench/contrib/extensions/browser/extensionsWorkbenchService.ts
@@ -206,6 +206,10 @@ export class Extension implements IExtension {
 		if (!this.gallery || !this.local) {
 			return false;
 		}
+		// Do not allow updating system extensions
+		if (this.type === ExtensionType.System) {
+			return false;
+		}
 		if (!this.local.preRelease && this.gallery.properties.isPreReleaseVersion) {
 			return false;
 		}