diff --git a/packages/astro/src/core/config.ts b/packages/astro/src/core/config.ts
index d9d73f36c26d..4efbb4c7b3e7 100644
--- a/packages/astro/src/core/config.ts
+++ b/packages/astro/src/core/config.ts
@@ -113,6 +113,11 @@ function addTrailingSlash(str: string): string {
 
 /** Convert the generic "yargs" flag object into our own, custom TypeScript object. */
 function resolveFlags(flags: Partial<Flags>): CLIFlags {
+	if(flags.experimentalStaticBuild) {
+		// eslint-disable-next-line no-console
+		console.warn(`Passing --experimental-static-build is no longer necessary and is now the default. The flag will be removed in a future version of Astro.`)
+	}
+
 	return {
 		projectRoot: typeof flags.projectRoot === 'string' ? flags.projectRoot : undefined,
 		site: typeof flags.site === 'string' ? flags.site : undefined,