diff --git a/.eslintrc.yaml b/.eslintrc.yaml
index 738b0ee20..edb20bfe1 100644
--- a/.eslintrc.yaml
+++ b/.eslintrc.yaml
@@ -2,7 +2,7 @@ parser: "@typescript-eslint/parser"
 env:
   browser: true
   es6: true # Map, etc.
-  mocha: true
+  jest: true
   node: true
 
 parserOptions:
diff --git a/ci/dev/test.sh b/ci/dev/test.sh
index 9922a9c84..613e25c3f 100755
--- a/ci/dev/test.sh
+++ b/ci/dev/test.sh
@@ -7,7 +7,7 @@ main() {
   cd test/test-plugin
   make -s out/index.js
   cd "$OLDPWD"
-  mocha -r ts-node/register ./test/*.test.ts "$@"
+  yarn jest "$@"
 }
 
 main "$@"
diff --git a/package.json b/package.json
index 24e9008c3..0f73c9793 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,6 @@
     "@types/http-proxy": "^1.17.4",
     "@types/jest": "^26.0.20",
     "@types/js-yaml": "^3.12.3",
-    "@types/mocha": "^8.0.3",
     "@types/node": "^12.12.7",
     "@types/node-fetch": "^2.5.7",
     "@types/parcel-bundler": "^1.12.1",
@@ -58,7 +57,6 @@
     "eslint-plugin-prettier": "^3.1.0",
     "jest": "^26.6.3",
     "leaked-handles": "^5.2.0",
-    "mocha": "^8.1.2",
     "parcel-bundler": "^1.12.4",
     "prettier": "^2.0.5",
     "stylelint": "^13.0.0",