diff --git a/change/@minecraft-core-build-tasks-fa216ba2-5deb-46b2-87ff-b6bcf95806aa.json b/change/@minecraft-core-build-tasks-fa216ba2-5deb-46b2-87ff-b6bcf95806aa.json
new file mode 100644
index 0000000..57f77a4
--- /dev/null
+++ b/change/@minecraft-core-build-tasks-fa216ba2-5deb-46b2-87ff-b6bcf95806aa.json
@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "build(dependabot): bump dotenv from 16.4.1 to 16.4.5",
+  "packageName": "@minecraft/core-build-tasks",
+  "email": "rlanda@microsoft.com",
+  "dependentChangeType": "patch"
+}
diff --git a/package-lock.json b/package-lock.json
index 2536142..da59698 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2740,14 +2740,15 @@
             }
         },
         "node_modules/dotenv": {
-            "version": "16.4.1",
-            "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.4.1.tgz",
-            "integrity": "sha512-CjA3y+Dr3FyFDOAMnxZEGtnW9KBR2M0JvvUtXNW+dYJL5ROWxP9DUHCwgFqpMk0OXCc0ljhaNTr2w/kutYIcHQ==",
+            "version": "16.4.5",
+            "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.4.5.tgz",
+            "integrity": "sha512-ZmdL2rui+eB2YwhsWzjInR8LldtZHGDoQ1ugH85ppHKwpUHL7j7rN0Ti9NCnGiQbhaZ11FpR+7ao1dNsmduNUg==",
+            "license": "BSD-2-Clause",
             "engines": {
                 "node": ">=12"
             },
             "funding": {
-                "url": "https://github.com/motdotla/dotenv?sponsor=1"
+                "url": "https://dotenvx.com"
             }
         },
         "node_modules/electron-to-chromium": {
@@ -6094,7 +6095,7 @@
             "dependencies": {
                 "@microsoft/api-extractor": "^7.38.3",
                 "@rushstack/node-core-library": "^3.59.6",
-                "dotenv": "^16.0.2",
+                "dotenv": "^16.4.5",
                 "esbuild": "^0.20.1",
                 "just-scripts": "^2.3.2",
                 "prettier": "^2.8.2",
diff --git a/tools/core-build-tasks/package.json b/tools/core-build-tasks/package.json
index b280366..b66409f 100644
--- a/tools/core-build-tasks/package.json
+++ b/tools/core-build-tasks/package.json
@@ -29,7 +29,7 @@
     "@rushstack/node-core-library": "^3.59.6",
     "@microsoft/api-extractor": "^7.38.3",
     "esbuild": "^0.20.1",
-    "dotenv": "^16.0.2",
+    "dotenv": "^16.4.5",
     "just-scripts": "^2.3.2",
     "prettier": "^2.8.2",
     "rimraf": "^3.0.2",