diff --git a/e2e/e2e.test.mts b/e2e/e2e.test.mts
index 55ea64c..05d04b1 100644
--- a/e2e/e2e.test.mts
+++ b/e2e/e2e.test.mts
@@ -277,9 +277,17 @@ describe('middleware (hybrid)', () => {
 	beforeAll(async () => {
 		await execFile('pnpm', ['install'], execOpts)
 		await execFile('pnpm', ['run', 'clean'], execOpts)
-		const { stdout: buildStdout } = await execFile('pnpm', ['run', 'build'], execOpts)
+		const { stdout: buildStdout } = await execFile(
+			'pnpm',
+			['run', 'build'],
+			execOpts,
+		)
 		expect(buildStdout).toMatch(/run the build step again/)
-		const { stdout: buildStdout2 } = await execFile('pnpm', ['run', 'build'], execOpts)
+		const { stdout: buildStdout2 } = await execFile(
+			'pnpm',
+			['run', 'build'],
+			execOpts,
+		)
 		expect(buildStdout2).not.toMatch(/run the build step again/)
 	})
 
@@ -317,6 +325,8 @@ describe('middleware (hybrid)', () => {
 	}
 
 	it('patches inline resources for dynamically generated pages referring static resources', async () => {
-		await checkHtmlIsPatched('/', { '/code.js': 'sha256-X7QGGDHgf6XMoabXvV9pW7gl3ALyZhZlgKq1s3pwmME=' })
+		await checkHtmlIsPatched('/', {
+			'/code.js': 'sha256-X7QGGDHgf6XMoabXvV9pW7gl3ALyZhZlgKq1s3pwmME=',
+		})
 	})
 })
diff --git a/package.json b/package.json
index 407957d..a5392f4 100644
--- a/package.json
+++ b/package.json
@@ -21,9 +21,7 @@
 			"default": "./src/state.mjs"
 		}
 	},
-	"files": [
-		"src/*"
-	],
+	"files": ["src/*"],
 	"scripts": {
 		"format": "biome format --write .",
 		"install-githooks": "if [ -d .git ]; then git config core.hooksPath .hooks; fi",
diff --git a/src/core.mjs b/src/core.mjs
index 927d540..62371ac 100644
--- a/src/core.mjs
+++ b/src/core.mjs
@@ -485,10 +485,17 @@ export const scanForNestedResources = async (logger, dirPath, h) => {
 }
 
 /**
+ * @param {Logger} logger
  * @param {HashesCollection} h
  * @param {string} sriHashesModule
+ * @param {boolean} enableMiddleware_SRI
  */
-export async function generateSRIHashesModule(h, sriHashesModule) {
+export async function generateSRIHashesModule(
+	logger,
+	h,
+	sriHashesModule,
+	enableMiddleware_SRI,
+) {
 	let persistHashes = false
 
 	const inlineScriptHashes = Array.from(h.inlineScriptHashes).sort()
@@ -539,6 +546,12 @@ export async function generateSRIHashesModule(h, sriHashesModule) {
 	}
 
 	if (persistHashes) {
+		if (enableMiddleware_SRI) {
+			logger.warn(
+				'SRI hashes have changed for static resources that may be used in dynamic pages. You should run the build step again',
+			)
+		}
+
 		let hashesFileContent = '// Do not edit this file manually\n\n'
 		hashesFileContent += `export const inlineScriptHashes = /** @type {string[]} */ ([${inlineScriptHashes
 			.map(h => `\n\t'${h}',`)
@@ -589,7 +602,7 @@ export async function generateSRIHashesModule(h, sriHashesModule) {
  */
 export const processStaticFiles = async (
 	logger,
-	{ distDir, sriHashesModule },
+	{ distDir, sriHashesModule, enableMiddleware_SRI },
 ) => {
 	const h = /** @satisfies {HashesCollection} */ {
 		inlineScriptHashes: new Set(),
@@ -618,7 +631,12 @@ export const processStaticFiles = async (
 		return
 	}
 
-	await generateSRIHashesModule(h, sriHashesModule)
+	await generateSRIHashesModule(
+		logger,
+		h,
+		sriHashesModule,
+		enableMiddleware_SRI,
+	)
 }
 
 /**
@@ -673,23 +691,23 @@ const loadVirtualMiddlewareModule = async (
 		sriHashesModule &&
 		(await doesFileExist(sriHashesModule))
 	) {
-		extraImports = `import * as hashesModule from '${sriHashesModule}'`
+		extraImports = `import { perResourceSriHashes } from '${sriHashesModule}'`
 		staticHashesModuleLoader = `
 try {
-	if (hashesModule.perResourceSriHashes) {
+	if (perResourceSriHashes) {
 		for (const [key, value] of Object.entries(
-			hashesModule.perResourceSriHashes?.scripts ?? {},
+			perResourceSriHashes.scripts ?? {},
 		)) {
 			globalHashes.scripts.set(key, value)
 		}
 		for (const [key, value] of Object.entries(
-			hashesModule.perResourceSriHashes?.styles ?? {},
+			perResourceSriHashes.styles ?? {},
 		)) {
 			globalHashes.styles.set(key, value)
 		}
 	}
 } catch (err) {
-	console.warn('Failed to load static hashes module:', err)
+	console.error('Failed to load static hashes module:', err)
 }
 `
 	} else if (enableStatic_SRI && sriHashesModule) {
@@ -725,7 +743,7 @@ const loadVirtualHashesModule = async (enableStatic_SRI, sriHashesModule) => {
 		sriHashesModule &&
 		(await doesFileExist(sriHashesModule))
 	) {
-		return `export * from '${sriHashesModule}'`
+		return await readFile(sriHashesModule, 'utf8')
 	}
 	return `
 export const inlineScriptHashes = []
diff --git a/src/main.d.ts b/src/main.d.ts
index 81d3286..7676584 100644
--- a/src/main.d.ts
+++ b/src/main.d.ts
@@ -36,7 +36,10 @@ export type ShieldOptions = {
 	 */
 	sriHashesModule?: string | undefined
 }
-export type StrictShieldOptions = ShieldOptions & { distDir: string }
+export type StrictShieldOptions = ShieldOptions & {
+	distDir: string
+	enableMiddleware_SRI: boolean
+}
 
 // Main Integration
 // -----------------------------------------------------------------------------
diff --git a/src/main.mjs b/src/main.mjs
index ffaf5e0..b4b980c 100644
--- a/src/main.mjs
+++ b/src/main.mjs
@@ -24,21 +24,29 @@ export const shield = ({
 	enableStatic_SRI,
 	sriHashesModule,
 }) => {
-	const astroBuildDone =
-		/** @satisfies {AstroHooks['astro:build:done']} */ async ({
-			dir,
-			logger,
-		}) =>
+	/**
+	 * @param {boolean} enableMiddleware_SRI
+	 * @returns {NonNullable<AstroHooks['astro:build:done']>}
+	 */
+	const getAstroBuildDone =
+		enableMiddleware_SRI =>
+		/** @satisfies {NonNullable<AstroHooks['astro:build:done']>} */
+		async ({ dir, logger }) =>
 			await processStaticFiles(logger, {
 				distDir: fileURLToPath(dir),
 				sriHashesModule,
+				enableMiddleware_SRI,
 			})
 
 	return /** @satisfies {AstroIntegration} */ {
 		name: '@kindspells/astro-shield',
 		hooks: {
 			...((enableStatic_SRI ?? true) === true
-				? { 'astro:build:done': astroBuildDone }
+				? {
+						'astro:build:done': getAstroBuildDone(
+							enableMiddleware_SRI ?? false,
+						),
+				  }
 				: undefined),
 			...(enableMiddleware_SRI === true
 				? {
diff --git a/tests/core.test.mts b/tests/core.test.mts
index 4166bcd..e13dd08 100644
--- a/tests/core.test.mts
+++ b/tests/core.test.mts
@@ -362,7 +362,7 @@ describe('updateStaticPageSriHashes', () => {
 				<title>My Test Page</title>
 			</head>
 			<body>
-				<script type="module" src="/core.mjs" integrity="sha256-etOR/kKV9aCSESe7t5JeBixVQA1DjUU2Zxk13wsPU8M="></script>
+				<script type="module" src="/core.mjs" integrity="sha256-KnjtswtmvdHQSShp8mURE9kt/62bvYGd5jCdjmbFDiI="></script>
 			</body>
 		</html>`
 
@@ -379,7 +379,7 @@ describe('updateStaticPageSriHashes', () => {
 		expect(h.extScriptHashes.size).toBe(1)
 		expect(
 			h.extScriptHashes.has(
-				'sha256-etOR/kKV9aCSESe7t5JeBixVQA1DjUU2Zxk13wsPU8M=',
+				'sha256-KnjtswtmvdHQSShp8mURE9kt/62bvYGd5jCdjmbFDiI=',
 			),
 		).toBe(true)
 		expect(h.inlineScriptHashes.size).toBe(0)
@@ -892,7 +892,7 @@ describe('generateSRIHashesModule', () => {
 		expect(await doesFileExist(modulePath)).toBe(false)
 
 		const h = getEmptyHashes()
-		await generateSRIHashesModule(h, modulePath)
+		await generateSRIHashesModule(console, h, modulePath, false)
 
 		expect(await doesFileExist(modulePath)).toBe(true)