diff --git a/.github/workflows/test-and-deploy.yml b/.github/workflows/test-and-deploy.yml
index f8a06051..a191dfb6 100644
--- a/.github/workflows/test-and-deploy.yml
+++ b/.github/workflows/test-and-deploy.yml
@@ -67,6 +67,14 @@ jobs:
           ./tools/package-inform7.sh
       - name: Test storyfiles
         run: ./tests/runtests.sh
+      - name: Test npm version of Emglken
+        if: github.ref == 'refs/heads/master'
+        run: |
+          npm install
+          ./build.js
+          ./tools/make-single-file.js
+          ./tools/package-inform7.sh
+          ./tests/runtests.sh
       - name: Check browser compatibility
         run: ./tests/check-compat.sh
       - run: cp tools/deploy.gitignore .gitignore
diff --git a/src/inform7/index.ts b/src/inform7/index.ts
index fba9eaeb..c78661a6 100644
--- a/src/inform7/index.ts
+++ b/src/inform7/index.ts
@@ -12,8 +12,8 @@ https://github.com/curiousdannii/parchment
 import {gunzipSync} from 'fflate'
 
 import {Blorb, FileView, parse_base64} from '../upstream/asyncglk/src/index-browser.ts'
-import {default as Bocfel} from '../upstream/emglken/build/bocfel.js'
-import {default as Glulxe} from '../upstream/emglken/build/glulxe.js'
+import {default as Bocfel} from 'emglken/build/bocfel.js'
+import {default as Glulxe} from 'emglken/build/glulxe.js'
 import type {ParchmentOptions} from '../common/interface.js'
 import {get_default_options, get_query_options} from '../common/options.js'
 
diff --git a/src/tools/inform7-wasm-cli.ts b/src/tools/inform7-wasm-cli.ts
index 1afd62ca..259fc43d 100644
--- a/src/tools/inform7-wasm-cli.ts
+++ b/src/tools/inform7-wasm-cli.ts
@@ -21,7 +21,7 @@ const rootpath = path.join(path.dirname(fileURLToPath(import.meta.url)), '..')
 
 // Compress and base64 encode the wasm files
 for (const vm of ['bocfel', 'glulxe']) {
-    const wasm = await fs.readFile(path.join(rootpath, `src/upstream/emglken/build/${vm}.wasm`))
+    const wasm = await fs.readFile(path.join(rootpath, `node_modules/emglken/build/${vm}.wasm`))
     const wasm_gz = gzipSync(wasm, {level: 9})
     const base64 = await Uint8Array_to_base64(wasm_gz)
     await fs.writeFile(path.join(rootpath, `dist/inform7/Parchment/${vm}.js`), `processBase64Zcode('${base64}')`)