diff --git a/package.json b/package.json
index 82c4c98e..71848fa2 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "koa-static": "^5.0.0",
     "micromatch": "^4.0.2",
     "minimist": "^1.2.5",
-    "mocha": "^7.1.1",
+    "mocha": "~7.1.1",
     "pirates": "^4.0.1",
     "pixelmatch": "^5.1.0",
     "pngjs": "^3.4.0",
diff --git a/yarn.lock b/yarn.lock
index f1050ef3..63edbe35 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8014,7 +8014,7 @@ mkdirp@^0.5.0, mkdirp@^0.5.1, mkdirp@^0.5.3, mkdirp@~0.5.1:
   dependencies:
     minimist "^1.2.5"
 
-mocha@^7.1.1:
+mocha@~7.1.1:
   version "7.1.1"
   resolved "https://registry.yarnpkg.com/mocha/-/mocha-7.1.1.tgz#89fbb30d09429845b1bb893a830bf5771049a441"
   integrity sha512-3qQsu3ijNS3GkWcccT5Zw0hf/rWvu1fTN9sPvEd81hlwsr30GX2GcDSSoBxo24IR8FelmrAydGC6/1J5QQP4WA==