diff --git a/javascript/ql/test/library-tests/Portals/src/m3/.snyk b/javascript/ql/test/library-tests/Portals/src/m3/.snyk
new file mode 100644
index 000000000000..777372217f1c
--- /dev/null
+++ b/javascript/ql/test/library-tests/Portals/src/m3/.snyk
@@ -0,0 +1,8 @@
+# Snyk (https://snyk.io) policy file, patches or ignores known vulnerabilities.
+version: v1.25.0
+ignore: {}
+# patches apply the minimum changes required to fix a vulnerability
+patch:
+  'npm:minimatch:20160620':
+    - m2 > glob > minimatch:
+        patched: '2022-09-23T19:02:59.262Z'
diff --git a/javascript/ql/test/library-tests/Portals/src/m3/package.json b/javascript/ql/test/library-tests/Portals/src/m3/package.json
index 6644e5c989c3..ac6230991b64 100644
--- a/javascript/ql/test/library-tests/Portals/src/m3/package.json
+++ b/javascript/ql/test/library-tests/Portals/src/m3/package.json
@@ -3,6 +3,12 @@
   "private": true,
   "dependencies": {
     "m1": "*",
-    "m2": "*"
-  }
+    "m2": "*",
+    "@snyk/protect": "latest"
+  },
+  "scripts": {
+    "prepublish": "npm run snyk-protect",
+    "snyk-protect": "snyk-protect"
+  },
+  "snyk": true
 }