diff --git a/package.json b/package.json
index c6de7b5e..194d08d3 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "@types/jest": "24.0.11",
     "@types/lodash": "4.14.123",
     "jest": "24.5.0",
-    "mock-fs": "4.8.0",
+    "mock-fs": "4.9.0",
     "rimraf": "^2.6.3",
     "ts-jest": "24.0.1",
     "tslint": "5.14.0",
diff --git a/yarn.lock b/yarn.lock
index 4df663f3..c9e60e25 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2453,10 +2453,10 @@ mkdirp@0.x, mkdirp@^0.5.1:
   dependencies:
     minimist "0.0.8"
 
-mock-fs@4.8.0:
-  version "4.8.0"
-  resolved "https://registry.yarnpkg.com/mock-fs/-/mock-fs-4.8.0.tgz#eb0784ceba4b34c91a924a5112eeb36e1b5a9e29"
-  integrity sha512-Gwj4KnJOW15YeTJKO5frFd/WDO5Mc0zxXqL9oHx3+e9rBqW8EVARqQHSaIXznUdljrD6pvbNGW2ZGXKPEfYJfw==
+mock-fs@4.9.0:
+  version "4.9.0"
+  resolved "https://registry.yarnpkg.com/mock-fs/-/mock-fs-4.9.0.tgz#7fc0c2f82965050b2776f8eb4eb63ca53a92ff86"
+  integrity sha512-aUj0qIniTNxzGqAC61Bvro7YD37tIBnMw3wpClucUVgNBS7r6YQn/M4wuoH7SGteKz4SvC1OBeDsfpG0MYC+1Q==
 
 ms@2.0.0:
   version "2.0.0"