diff --git a/package.json b/package.json
index 70d2418..667f3b8 100644
--- a/package.json
+++ b/package.json
@@ -21,5 +21,7 @@
     "webpack-node-externals": ">1.7.2"
   },
   "dependencies": {
+    "@types/node": "^14.6.0",
+    "esm": "^3.2.25"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 38dfe01..6db2f60 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,6 +2,11 @@
 # yarn lockfile v1
 
 
+"@types/node@^14.6.0":
+  version "14.6.0"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-14.6.0.tgz#7d4411bf5157339337d7cff864d9ff45f177b499"
+  integrity sha512-mikldZQitV94akrc4sCcSjtJfsTKt4p+e/s0AGscVA6XArQ9kFclP+ZiYUMnq987rc6QlYxXv/EivqlfSLxpKA==
+
 "@webassemblyjs/ast@1.9.0":
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/@webassemblyjs/ast/-/ast-1.9.0.tgz#bd850604b4042459a5a41cd7d338cbed695ed964"
@@ -938,6 +943,11 @@ eslint-scope@^4.0.3:
     esrecurse "^4.1.0"
     estraverse "^4.1.1"
 
+esm@^3.2.25:
+  version "3.2.25"
+  resolved "https://registry.yarnpkg.com/esm/-/esm-3.2.25.tgz#342c18c29d56157688ba5ce31f8431fbb795cc10"
+  integrity sha512-U1suiZ2oDVWv4zPO56S0NcR5QriEahGtdN2OR6FiOG4WJvcjBVFB0qI4+eKoWFH483PKGuLuu6V8Z4T5g63UVA==
+
 esrecurse@^4.1.0:
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/esrecurse/-/esrecurse-4.2.1.tgz#007a3b9fdbc2b3bb87e4879ea19c92fdbd3942cf"