diff --git a/packages/metamask-snap/package.json b/packages/metamask-snap/package.json
index 97ec9968..50d61e11 100644
--- a/packages/metamask-snap/package.json
+++ b/packages/metamask-snap/package.json
@@ -44,7 +44,7 @@
 		"serve": "mm-snap serve",
 		"start": "mm-snap watch",
 		"test": "yarn test:lib && yarn test:snap",
-		"test:lib": "jest --config ./jest.config.lib.js",
+		"test:lib": "jest --config ./jest.config.lib.ts",
 		"test:snap": "jest --config ./jest.config.snap.js"
 	},
 	"dependencies": {
diff --git a/packages/proto/tsconfig.json b/packages/proto/tsconfig.json
index 08177688..ee245f00 100644
--- a/packages/proto/tsconfig.json
+++ b/packages/proto/tsconfig.json
@@ -9,7 +9,7 @@
 		"noImplicitAny": false,
 		"esModuleInterop": true,
 		"moduleResolution": "node",
-		"lib": ["ES2020"]
+		"lib": ["ES2020"],
 	},
 	"include": ["src/**/*"],
 	"exclude": ["node_modules"]