diff --git a/02-node-express-starter/static-files/node-express-static-files/package-lock.json b/02-node-express-starter/static-files/node-express-static-files/package-lock.json
index 0310d5d1..ace162cf 100644
--- a/02-node-express-starter/static-files/node-express-static-files/package-lock.json
+++ b/02-node-express-starter/static-files/node-express-static-files/package-lock.json
@@ -9,7 +9,7 @@
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diff --git a/02-node-express-starter/static-files/node-express-static-files/package.json b/02-node-express-starter/static-files/node-express-static-files/package.json
index 8eb4db9e..46c6f975 100644
--- a/02-node-express-starter/static-files/node-express-static-files/package.json
+++ b/02-node-express-starter/static-files/node-express-static-files/package.json
@@ -12,7 +12,7 @@
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+    "dotenv": "^17.0.0",
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diff --git a/04-node-express-api/omdb-api/modular/package-lock.json b/04-node-express-api/omdb-api/modular/package-lock.json
index 13f2b2b4..7a1552b1 100644
--- a/04-node-express-api/omdb-api/modular/package-lock.json
+++ b/04-node-express-api/omdb-api/modular/package-lock.json
@@ -10,7 +10,7 @@
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diff --git a/04-node-express-api/omdb-api/modular/package.json b/04-node-express-api/omdb-api/modular/package.json
index 39784198..0173fab7 100644
--- a/04-node-express-api/omdb-api/modular/package.json
+++ b/04-node-express-api/omdb-api/modular/package.json
@@ -12,7 +12,7 @@
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diff --git a/04-node-express-api/omdb-api/simple/package.json b/04-node-express-api/omdb-api/simple/package.json
index bddcae3c..7aeb1d8b 100644
--- a/04-node-express-api/omdb-api/simple/package.json
+++ b/04-node-express-api/omdb-api/simple/package.json
@@ -12,7 +12,7 @@
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diff --git a/06-node-express-databases/node-crud-demo/package.json b/06-node-express-databases/node-crud-demo/package.json
index fe636215..8c9ab5c2 100644
--- a/06-node-express-databases/node-crud-demo/package.json
+++ b/06-node-express-databases/node-crud-demo/package.json
@@ -15,7 +15,7 @@
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diff --git a/06-node-express-databases/node-express-mongo-crud-library/package-lock.json b/06-node-express-databases/node-express-mongo-crud-library/package-lock.json
index 3bd3e74c..6dcef998 100644
--- a/06-node-express-databases/node-express-mongo-crud-library/package-lock.json
+++ b/06-node-express-databases/node-express-mongo-crud-library/package-lock.json
@@ -10,7 +10,7 @@
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diff --git a/06-node-express-databases/node-express-mongo-crud-library/package.json b/06-node-express-databases/node-express-mongo-crud-library/package.json
index d323d62d..a6b4a33c 100644
--- a/06-node-express-databases/node-express-mongo-crud-library/package.json
+++ b/06-node-express-databases/node-express-mongo-crud-library/package.json
@@ -11,7 +11,7 @@
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diff --git a/06-node-express-databases/node-express-mongo-relations-blog/package-lock.json b/06-node-express-databases/node-express-mongo-relations-blog/package-lock.json
index c8dad861..220979ed 100644
--- a/06-node-express-databases/node-express-mongo-relations-blog/package-lock.json
+++ b/06-node-express-databases/node-express-mongo-relations-blog/package-lock.json
@@ -9,7 +9,7 @@
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diff --git a/06-node-express-databases/node-express-mongo-relations-blog/package.json b/06-node-express-databases/node-express-mongo-relations-blog/package.json
index 86a7fdd0..fc69719e 100644
--- a/06-node-express-databases/node-express-mongo-relations-blog/package.json
+++ b/06-node-express-databases/node-express-mongo-relations-blog/package.json
@@ -10,7 +10,7 @@
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-    "dotenv": "16.4.7",
+    "dotenv": "17.2.3",
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diff --git a/06-node-express-databases/node-mysql/package-lock.json b/06-node-express-databases/node-mysql/package-lock.json
index 2885dcfd..001e8529 100644
--- a/06-node-express-databases/node-mysql/package-lock.json
+++ b/06-node-express-databases/node-mysql/package-lock.json
@@ -9,7 +9,7 @@
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diff --git a/06-node-express-databases/node-mysql/package.json b/06-node-express-databases/node-mysql/package.json
index 2d4eb38c..04bbebf8 100644
--- a/06-node-express-databases/node-mysql/package.json
+++ b/06-node-express-databases/node-mysql/package.json
@@ -11,7 +11,7 @@
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   "license": "ISC",
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-    "dotenv": "^16.0.1",
+    "dotenv": "^17.0.0",
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     "mysql": "^2.18.1"
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diff --git a/07-node-express-authentication/node-auth-passport-google/package-lock.json b/07-node-express-authentication/node-auth-passport-google/package-lock.json
index 3914eaf0..255e703f 100644
--- a/07-node-express-authentication/node-auth-passport-google/package-lock.json
+++ b/07-node-express-authentication/node-auth-passport-google/package-lock.json
@@ -13,7 +13,7 @@
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diff --git a/07-node-express-authentication/node-auth-passport-google/package.json b/07-node-express-authentication/node-auth-passport-google/package.json
index 60bc1ebf..357365b6 100644
--- a/07-node-express-authentication/node-auth-passport-google/package.json
+++ b/07-node-express-authentication/node-auth-passport-google/package.json
@@ -13,7 +13,7 @@
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     "cookie-parser": "1.4.6",
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diff --git a/07-node-express-authentication/node-auth-passport/package-lock.json b/07-node-express-authentication/node-auth-passport/package-lock.json
index bd5ae5af..73e6fe9c 100644
--- a/07-node-express-authentication/node-auth-passport/package-lock.json
+++ b/07-node-express-authentication/node-auth-passport/package-lock.json
@@ -12,7 +12,7 @@
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diff --git a/07-node-express-authentication/node-auth-passport/package.json b/07-node-express-authentication/node-auth-passport/package.json
index 452bfc83..020f95f1 100644
--- a/07-node-express-authentication/node-auth-passport/package.json
+++ b/07-node-express-authentication/node-auth-passport/package.json
@@ -12,7 +12,7 @@
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diff --git a/07-node-express-authentication/node-auth-user-registration/package-lock.json b/07-node-express-authentication/node-auth-user-registration/package-lock.json
index 0906e287..abb135aa 100644
--- a/07-node-express-authentication/node-auth-user-registration/package-lock.json
+++ b/07-node-express-authentication/node-auth-user-registration/package-lock.json
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         "cookie-parser": "1.4.6",
-        "dotenv": "16.4.7",
+        "dotenv": "17.2.3",
         "express": "4.19.2",
         "express-session": "1.18.2",
         "hbs": "4.2.0",
@@ -1805,9 +1805,9 @@
       }
     },
     "node_modules/dotenv": {
-      "version": "16.4.7",
-      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.4.7.tgz",
-      "integrity": "sha512-47qPchRCykZC03FhkYAhrvwU4xDBFIj1QPqaarj6mdM/hgUzfPHcpkHJOn3mJAufFeeAxAzeGsr5X0M4k6fLZQ==",
+      "version": "17.2.3",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-17.2.3.tgz",
+      "integrity": "sha512-JVUnt+DUIzu87TABbhPmNfVdBDt18BLOWjMUFJMSi/Qqg7NTYtabbvSNJGOJ7afbRuv9D/lngizHtP7QyLQ+9w==",
       "engines": {
         "node": ">=12"
       },
@@ -4925,9 +4925,9 @@
       "integrity": "sha512-463v3ZeIrcWtdgIg6vI6XUncguvr2TnGl4SzDXinkt9mSLpBJKXT3mW6xT3VQdDN11+WVs29pgvivTc4Lp8v+w=="
     },
     "dotenv": {
-      "version": "16.4.7",
-      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-16.4.7.tgz",
-      "integrity": "sha512-47qPchRCykZC03FhkYAhrvwU4xDBFIj1QPqaarj6mdM/hgUzfPHcpkHJOn3mJAufFeeAxAzeGsr5X0M4k6fLZQ=="
+      "version": "17.2.3",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-17.2.3.tgz",
+      "integrity": "sha512-JVUnt+DUIzu87TABbhPmNfVdBDt18BLOWjMUFJMSi/Qqg7NTYtabbvSNJGOJ7afbRuv9D/lngizHtP7QyLQ+9w=="
     },
     "ee-first": {
       "version": "1.1.1",
diff --git a/07-node-express-authentication/node-auth-user-registration/package.json b/07-node-express-authentication/node-auth-user-registration/package.json
index 8914c876..8af38302 100644
--- a/07-node-express-authentication/node-auth-user-registration/package.json
+++ b/07-node-express-authentication/node-auth-user-registration/package.json
@@ -12,7 +12,7 @@
     "bcrypt": "5.1.1",
     "connect-mongo": "5.1.0",
     "cookie-parser": "1.4.6",
-    "dotenv": "16.4.7",
+    "dotenv": "17.2.3",
     "express": "4.19.2",
     "express-session": "1.18.2",
     "hbs": "4.2.0",
diff --git a/08-node-express-uploading/package.json b/08-node-express-uploading/package.json
index c54ff275..0172aa94 100644
--- a/08-node-express-uploading/package.json
+++ b/08-node-express-uploading/package.json
@@ -11,7 +11,7 @@
     "body-parser": "2.2.0",
     "cloudinary": "2.7.0",
     "cookie-parser": "1.4.6",
-    "dotenv": "16.4.7",
+    "dotenv": "17.2.3",
     "express": "4.19.2",
     "hbs": "4.2.0",
     "mongoose": "8.19.0",