diff --git a/extensions/configuration-editing/schemas/devContainer.vscode.schema.json b/extensions/configuration-editing/schemas/devContainer.vscode.schema.json
index e0f2a8aa68f..13b4e53f894 100644
--- a/extensions/configuration-editing/schemas/devContainer.vscode.schema.json
+++ b/extensions/configuration-editing/schemas/devContainer.vscode.schema.json
@@ -13,7 +13,7 @@
 							"description": "An array of extensions that should be installed into the container.",
 							"items": {
 								"type": "string",
-								"pattern": "^([a-z0-9A-Z][a-z0-9A-Z-]*)\\.([a-z0-9A-Z][a-z0-9A-Z-]*)(@(0|[1-9]\\d*)\\.(0|[1-9]\\d*)\\.(0|[1-9]\\d*)(?:-((?:0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\\.(?:0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\\+([0-9a-zA-Z-]+(?:\\.[0-9a-zA-Z-]+)*))?)?$",
+								"pattern": "^([a-z0-9A-Z][a-z0-9A-Z-]*)\\.([a-z0-9A-Z][a-z0-9A-Z-]*)((@(0|[1-9]\\d*)\\.(0|[1-9]\\d*)\\.(0|[1-9]\\d*)(?:-((?:0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\\.(?:0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\\+([0-9a-zA-Z-]+(?:\\.[0-9a-zA-Z-]+)*))?)|@prerelease)?$",
 								"errorMessage": "Expected format: '${publisher}.${name}' or '${publisher}.${name}@${version}'. Example: 'ms-dotnettools.csharp'."
 							}
 						},