diff --git a/package-lock.json b/package-lock.json
index 761e510274..04451247e0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "powershell",
-  "version": "2021.9.0",
+  "version": "2021.9.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "powershell",
-      "version": "2021.9.0",
+      "version": "2021.9.1",
       "license": "SEE LICENSE IN LICENSE.txt",
       "dependencies": {
         "node-fetch": "~2.6.2",
@@ -32,7 +32,7 @@
         "mocha": "~9.1.1",
         "mocha-junit-reporter": "~2.0.0",
         "mocha-multi-reporters": "~1.5.1",
-        "mock-fs": "~5.0.0",
+        "mock-fs": "~5.1.0",
         "rewire": "~5.0.0",
         "sinon": "~11.1.2",
         "tslint": "~6.1.3",
@@ -2344,9 +2344,9 @@
       "dev": true
     },
     "node_modules/mock-fs": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/mock-fs/-/mock-fs-5.0.0.tgz",
-      "integrity": "sha512-A5mm/SpSDwwc/klSaEvvKMGQQtiGiQy8UcDAd/vpVO1fV+4zaHjt39yKgCSErFzv2zYxZIUx9Ud/7ybeHBf8Fg==",
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/mock-fs/-/mock-fs-5.1.0.tgz",
+      "integrity": "sha512-wXdQ2nIk81TYIGLphUnbXl8akQpjb9ItfZefMcTxZcoe+djMkd5POU8fQdSEErxVAeT4CgDHWveYquys4H6Cmw==",
       "dev": true
     },
     "node_modules/ms": {
@@ -5731,9 +5731,9 @@
       }
     },
     "mock-fs": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/mock-fs/-/mock-fs-5.0.0.tgz",
-      "integrity": "sha512-A5mm/SpSDwwc/klSaEvvKMGQQtiGiQy8UcDAd/vpVO1fV+4zaHjt39yKgCSErFzv2zYxZIUx9Ud/7ybeHBf8Fg==",
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/mock-fs/-/mock-fs-5.1.0.tgz",
+      "integrity": "sha512-wXdQ2nIk81TYIGLphUnbXl8akQpjb9ItfZefMcTxZcoe+djMkd5POU8fQdSEErxVAeT4CgDHWveYquys4H6Cmw==",
       "dev": true
     },
     "ms": {
diff --git a/package.json b/package.json
index ac0d581cf4..2f6faa8e9f 100644
--- a/package.json
+++ b/package.json
@@ -65,7 +65,7 @@
     "mocha": "~9.1.1",
     "mocha-junit-reporter": "~2.0.0",
     "mocha-multi-reporters": "~1.5.1",
-    "mock-fs": "~5.0.0",
+    "mock-fs": "~5.1.0",
     "rewire": "~5.0.0",
     "sinon": "~11.1.2",
     "tslint": "~6.1.3",