diff --git a/package.json b/package.json
index 11ece17..71e2e31 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "@types/lodash": "4.14.146",
     "@types/minimatch": "3.0.3",
     "@types/mocha": "5.2.7",
-    "@types/mock-fs": "^4.10.0",
+    "@types/mock-fs": "4.10.0",
     "@types/recursive-readdir": "2.2.0",
     "@types/sinon": "7.5.0",
     "@types/sinon-chai": "3.2.3",
@@ -70,7 +70,7 @@
     "lodash": "4.17.15",
     "minimatch": "3.0.4",
     "mocha": "6.2.2",
-    "mock-fs": "^4.10.3",
+    "mock-fs": "4.10.3",
     "noicejs": "3.0.0",
     "nyc": "14.1.1",
     "recursive-readdir": "2.2.2",
diff --git a/yarn.lock b/yarn.lock
index 489730e..37c353e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -250,7 +250,7 @@
   resolved "https://artifacts.apextoaster.com/repository/group-npm/@types/mocha/-/mocha-5.2.7.tgz#315d570ccb56c53452ff8638738df60726d5b6ea"
   integrity sha512-NYrtPht0wGzhwe9+/idPaBB+TqkY9AhTvOLMkThm0IoEfLaiVQZwBwyJ5puCkO3AUCWrmcoePjp2mbFocKy4SQ==
 
-"@types/mock-fs@^4.10.0":
+"@types/mock-fs@4.10.0":
   version "4.10.0"
   resolved "https://artifacts.apextoaster.com/repository/group-npm/@types/mock-fs/-/mock-fs-4.10.0.tgz#460061b186993d76856f669d5317cda8a007c24b"
   integrity sha512-FQ5alSzmHMmliqcL36JqIA4Yyn9jyJKvRSGV3mvPh108VFatX7naJDzSG4fnFQNZFq9dIx0Dzoe6ddflMB2Xkg==
@@ -2304,7 +2304,7 @@ mocha@6.2.2:
     yargs-parser "13.1.1"
     yargs-unparser "1.6.0"
 
-mock-fs@^4.10.3:
+mock-fs@4.10.3:
   version "4.10.3"
   resolved "https://artifacts.apextoaster.com/repository/group-npm/mock-fs/-/mock-fs-4.10.3.tgz#d0550663dd2b5d33a7c1b8713c6925aab07a04ae"
   integrity sha512-bcukePBvuA3qovmq0Qtqu9+1APCIGkFHnsozrPIVromt5XFGGgkQSfaN0H6RI8gStHkO/hRgimvS3tooNes4pQ==