diff --git a/package.json b/package.json
index 4a96241..8185c01 100644
--- a/package.json
+++ b/package.json
@@ -22,39 +22,39 @@
     "node": ">=6.0.0"
   },
   "dependencies": {
-    "nodemailer": "^6.3.1",
-    "tslib": "^1.10.0"
+    "nodemailer": "^6.4.17",
+    "tslib": "^1.14.1"
   },
   "devDependencies": {
-    "@types/chai": "^4.2.3",
+    "@types/chai": "^4.2.14",
     "@types/dirty-chai": "^2.0.2",
     "@types/mocha": "^5.2.7",
-    "@types/node": "^12.7.12",
-    "@types/nodemailer": "^6.2.1",
-    "@types/smtp-server": "^3.5.2",
-    "chai": "^4.2.0",
+    "@types/node": "^12.19.16",
+    "@types/nodemailer": "^6.4.0",
+    "@types/smtp-server": "^3.5.6",
+    "chai": "^4.3.0",
     "changelog-parser": "^2.8.0",
-    "coveralls": "^3.0.6",
+    "coveralls": "^3.1.0",
     "cross-env": "^6.0.3",
     "dirty-chai": "^2.0.1",
-    "eslint": "^6.5.1",
-    "eslint-config-prettier": "^6.4.0",
-    "eslint-plugin-import": "^2.18.2",
+    "eslint": "^6.8.0",
+    "eslint-config-prettier": "^6.15.0",
+    "eslint-plugin-import": "^2.22.1",
     "eslint-plugin-node": "^10.0.0",
     "eslint-plugin-promise": "^4.2.1",
-    "markdownlint-cli": "^0.18.0",
-    "mocha": "^6.2.1",
+    "markdownlint-cli": "^0.26.0",
+    "mocha": "^6.2.3",
     "mocha-steps": "^1.3.0",
     "nyc": "^14.1.1",
-    "prettier": "^1.18.2",
-    "promise-readable": "^5.0.3",
-    "promise-socket": "^6.0.2",
-    "shx": "^0.3.2",
+    "prettier": "^1.19.1",
+    "promise-readable": "^5.0.4",
+    "promise-socket": "^6.0.3",
+    "shx": "^0.3.3",
     "smtp-server-as-promised": "^5.2.5",
-    "ts-node": "^8.4.1",
-    "tslint": "^5.20.0",
+    "ts-node": "^8.10.2",
+    "tslint": "^5.20.1",
     "tslint-config-prettier": "^1.18.0",
-    "typescript": "^3.6.4"
+    "typescript": "^3.9.8"
   },
   "scripts": {
     "compile": "tsc --pretty --project .",