diff --git a/package.json b/package.json
index 8bc6e93..971a045 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "@types/lodash": "^4.14.120",
     "@types/mocha": "^5.2.5",
     "@types/sinon": "^7.0.5",
-    "@types/sinon-chai": "^3.2.2",
+    "@types/sinon-chai": "3.2.2",
     "chai": "^4.2.0",
     "coveralls": "^3.0.2",
     "es-check": "^5.0.0",