diff --git a/package.json b/package.json
index 09946a6..d9abb13 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
   "dependencies": {
     "@google-cloud/firestore": "^6.5.0",
     "@koa/cors": "^4.0.0",
-    "dotenv": "^16.0.3",
+    "dotenv": "^16.4.5",
     "koa": "^2.14.1",
     "koa-helmet": "^6.1.0",
     "koa-logger": "^3.2.1",
diff --git a/yarn.lock b/yarn.lock
index 208e309..f7cd360 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1992,10 +1992,10 @@ doctrine@^3.0.0:
   dependencies:
     esutils "^2.0.2"
 
-dotenv@^16.0.3:
-  version "16.0.3"
-  resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-16.0.3.tgz#115aec42bac5053db3c456db30cc243a5a836a07"
-  integrity sha512-7GO6HghkA5fYG9TYnNxi14/7K9f5occMlp3zXAuSxn7CKCxt9xbNWG7yF8hTCSUchlfWSe3uLmlPfigevRItzQ==
+dotenv@^16.4.5:
+  version "16.4.5"
+  resolved "https://registry.yarnpkg.com/dotenv/-/dotenv-16.4.5.tgz#cdd3b3b604cb327e286b4762e13502f717cb099f"
+  integrity sha512-ZmdL2rui+eB2YwhsWzjInR8LldtZHGDoQ1ugH85ppHKwpUHL7j7rN0Ti9NCnGiQbhaZ11FpR+7ao1dNsmduNUg==
 
 duplexify@^4.0.0:
   version "4.1.2"