diff --git a/packages/package.json b/packages/package.json
index 6f4607ec..06aa28f2 100644
--- a/packages/package.json
+++ b/packages/package.json
@@ -19,7 +19,7 @@
   "keywords": [],
   "author": "Ink & Switch",
   "dependencies": {
-    "@inkandswitch/patchwork-filesystem": "^0.1.3",
+    "@inkandswitch/patchwork-filesystem": "^0.2.7",
     "@inkandswitch/patchwork-plugins": "^0.0.5",
     "solid-js": "^1.9.3"
   },
diff --git a/packages/pnpm-lock.yaml b/packages/pnpm-lock.yaml
index 3ffec2fc..72222f69 100644
--- a/packages/pnpm-lock.yaml
+++ b/packages/pnpm-lock.yaml
@@ -9,8 +9,8 @@ importers:
   .:
     dependencies:
       '@inkandswitch/patchwork-filesystem':
-        specifier: ^0.1.3
-        version: 0.1.3(@automerge/automerge-repo@2.5.0)(@automerge/automerge@3.2.1)
+        specifier: ^0.2.7
+        version: 0.2.7(@automerge/automerge-repo@2.5.0)(@automerge/automerge@3.2.1)
       '@inkandswitch/patchwork-plugins':
         specifier: ^0.0.5
         version: 0.0.5
@@ -351,8 +351,8 @@ packages:
   '@inkandswitch/patchwork-filesystem@0.0.3':
     resolution: {integrity: sha512-x6yqX1Xyr05ug4YfRyfKJ7jSm/zjhMxU7g/e70nz4QbxfLmcG98LHB9qAkFI2zd+VvKLnTvSpPGu2UvJzXGciw==}
 
-  '@inkandswitch/patchwork-filesystem@0.1.3':
-    resolution: {integrity: sha512-hanR/YQUAE8aRg9GoYdG8H9muvuYiGYYXzb4ssa9WXDkirqWwShdzM2xVs7t0txja2b1yPbmMUf9uHzSLyyPYQ==}
+  '@inkandswitch/patchwork-filesystem@0.2.7':
+    resolution: {integrity: sha512-8tyhW6Y2c5pJurfUfBioPTLwxC8j1Ye4cVQeQyhzeh8iqriklBCQRd5kacWU8tzDw5ZXcd0e/mbRjI4WxkGB2g==}
     peerDependencies:
       '@automerge/automerge': '*'
       '@automerge/automerge-repo': '*'
@@ -1352,12 +1352,10 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  '@inkandswitch/patchwork-filesystem@0.1.3(@automerge/automerge-repo@2.5.0)(@automerge/automerge@3.2.1)':
+  '@inkandswitch/patchwork-filesystem@0.2.7(@automerge/automerge-repo@2.5.0)(@automerge/automerge@3.2.1)':
     dependencies:
       '@automerge/automerge': 3.2.1
       '@automerge/automerge-repo': 2.5.0
-      '@types/debug': 4.1.13
-      '@types/node': 20.19.43
       debug: 4.4.3
       resolve.exports: 2.0.3
     transitivePeerDependencies:
diff --git a/packages/src/discover-plugins.test.ts b/packages/src/discover-plugins.test.ts
new file mode 100644
index 00000000..05b867e1
--- /dev/null
+++ b/packages/src/discover-plugins.test.ts
@@ -0,0 +1,30 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+const { importPackageFromHttpUrl } = vi.hoisted(() => ({
+  importPackageFromHttpUrl: vi.fn(),
+}));
+
+vi.mock("@inkandswitch/patchwork-filesystem", () => ({
+  importPackageFromHttpUrl,
+}));
+
+import { discoverHttpPlugins } from "./discover-plugins.ts";
+
+describe("discoverHttpPlugins", () => {
+  beforeEach(() => {
+    importPackageFromHttpUrl.mockReset();
+  });
+
+  it("imports HTTP packages through the host package importer", async () => {
+    importPackageFromHttpUrl.mockResolvedValue({
+      plugins: [{ id: "example", load: () => {} }],
+    });
+
+    await expect(
+      discoverHttpPlugins("https://example.com/package/")
+    ).resolves.toEqual([{ id: "example" }]);
+    expect(importPackageFromHttpUrl).toHaveBeenCalledWith(
+      "https://example.com/package/"
+    );
+  });
+});
diff --git a/packages/src/discover-plugins.ts b/packages/src/discover-plugins.ts
index eb694dfc..5d6e8b8d 100644
--- a/packages/src/discover-plugins.ts
+++ b/packages/src/discover-plugins.ts
@@ -127,7 +127,7 @@ function withTimeout<T>(p: Promise<T>, ms: number, what: string): Promise<T> {
  * Discover the plugins an http(s) package exports by importing its entry module
  * and reading its `plugins` export — the http counterpart to the worker-based
  * automerge discovery, and the same thing the host does for suggested/http
- * modules (`importModuleFromHttpUrl` → `mod.plugins`).
+ * modules (`importPackageFromHttpUrl` → `mod.plugins`).
  *
  * It runs on the MAIN thread deliberately: there is no host worker that imports
  * http URLs, and a plain Worker has no importmap to resolve the module's bare
@@ -138,15 +138,11 @@ export async function discoverHttpPlugins(
   url: string,
   timeoutMs = 15000
 ): Promise<PluginDescriptor[]> {
-  // Reached via the host importmap at runtime; guard so an older filesystem
-  // bundle degrades to "couldn't preview" instead of a hard module-load error.
-  const importHttp = filesystem.importModuleFromHttpUrl;
-  if (typeof importHttp !== "function") {
-    throw new Error(
-      "This host build can't import http(s) packages — update @inkandswitch/patchwork-filesystem to 0.1.3+."
-    );
-  }
-  const mod = await withTimeout(importHttp(url), timeoutMs, "importing the package");
+  const mod = await withTimeout(
+    filesystem.importPackageFromHttpUrl(url),
+    timeoutMs,
+    "importing the package"
+  );
   const plugins: any[] = Array.isArray((mod as any)?.plugins)
     ? (mod as any).plugins
     : [];