diff --git a/package.json b/package.json
index 597d08ce..010851fe 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "oclif": "^1.18.1",
     "shx": "^0.3.3",
     "ts-node": "^9.1.1",
-    "typescript": "3.8.3"
+    "typescript": "^4.3.5"
   },
   "engines": {
     "node": ">=8.0.0"
@@ -37,7 +37,7 @@
   "license": "MIT",
   "main": "./lib/help.js",
   "oclif": {
-    "commands": "./lib/commands/",
+    "commands": "./lib/commands",
     "bin": "oclif",
     "devPlugins": [
       "@oclif/plugin-plugins"
@@ -47,7 +47,7 @@
   "scripts": {
     "build": "shx rm -rf lib && tsc",
     "lint": "eslint . --ext .ts --config .eslintrc",
-    "pretest": "yarn build && tsc -p test --noEmit",
+    "pretest": "yarn build && tsc --noEmit",
     "test": "mocha --forbid-only \"test/**/*.test.ts\"",
     "posttest": "yarn lint",
     "prepack": "yarn run build && oclif-dev manifest",
diff --git a/tsconfig.json b/tsconfig.json
index 12491d28..ab180be0 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -6,15 +6,11 @@
     "module": "commonjs",
     "noUnusedLocals": true,
     "noUnusedParameters": true,
-    "outDir": "./lib",
+    "outDir": "lib",
     "pretty": true,
-    "rootDirs": [
-      "./src"
-    ],
+    "rootDir": "src",
     "strict": true,
     "target": "es2017"
   },
-  "include": [
-    "./src/**/*"
-  ]
+  "include": ["./src/**/*.ts"]
 }
diff --git a/yarn.lock b/yarn.lock
index 9a7583c7..2b997e90 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4862,10 +4862,10 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-typescript@3.8.3:
-  version "3.8.3"
-  resolved "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz#409eb8544ea0335711205869ec458ab109ee1061"
-  integrity sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==
+typescript@4.3.5:
+  version "4.3.5"
+  resolved "https://registry.npmjs.org/typescript/-/typescript-4.3.5.tgz#4d1c37cc16e893973c45a06886b7113234f119f4"
+  integrity sha512-DqQgihaQ9cUrskJo9kIyW/+g0Vxsk8cDtZ52a3NGh0YNTfpUSArXSohyUGnvbPazEPLu398C0UxmKSOrPumUzA==
 
 union-value@^1.0.0:
   version "1.0.1"