diff --git a/package.json b/package.json
index d351050..9b538ef 100644
--- a/package.json
+++ b/package.json
@@ -54,8 +54,8 @@
     "koa": "^2.11.0",
     "mocha": "~7.1.0",
     "mongodb-core": "^3.2.7",
-    "mysql": "^2.18.1",
-    "mysql2": "^2.1.0",
+    "mysql": "~2.18.1",
+    "mysql2": "~2.1.0",
     "nock": "~10.0.6",
     "nyc": "~13.1.0",
     "pg": "^7.18.2",