diff --git a/00-basic-express-generator/app/package.json b/00-basic-express-generator/app/package.json
index 689a364..764c4fa 100644
--- a/00-basic-express-generator/app/package.json
+++ b/00-basic-express-generator/app/package.json
@@ -6,6 +6,6 @@
     "start": "node app.js"
   },
   "dependencies": {
-    "express": "4.18.2"
+    "express": "4.20.0"
   }
 }
\ No newline at end of file
diff --git a/01-express-nodemon/app/package.json b/01-express-nodemon/app/package.json
index b8bfa8e..dd81a64 100644
--- a/01-express-nodemon/app/package.json
+++ b/01-express-nodemon/app/package.json
@@ -6,7 +6,7 @@
     "start": "nodemon app.js"
   },
   "dependencies": {
-    "express": "4.18.2"
+    "express": "4.20.0"
   },
   "devDependencies": {
     "nodemon": "2.0.21"
diff --git a/02-express-redis-nodemon/app/package.json b/02-express-redis-nodemon/app/package.json
index b79ca57..6f65300 100644
--- a/02-express-redis-nodemon/app/package.json
+++ b/02-express-redis-nodemon/app/package.json
@@ -6,7 +6,7 @@
     "start": "nodemon app.js"
   },
   "dependencies": {
-    "express": "4.18.2",
+    "express": "4.20.0",
     "redis": "4.6.5"
   },
   "devDependencies": {