diff --git a/package.json b/package.json
index 3fb255fef..2645151be 100644
--- a/package.json
+++ b/package.json
@@ -130,7 +130,7 @@
     "mocha": "8.2.1",
     "nyc": "15.1.0",
     "pre-commit": "1.2.2",
-    "readdirp": "^3.5.0",
+    "readdirp": "3.5.0",
     "sinon": "9.2.1",
     "standard-version": "9.0.0",
     "typescript": "4.0.5"