diff --git a/package-lock.json b/package-lock.json
index 9af1205ff..f6461c607 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7330,12 +7330,14 @@
             "license": "MIT"
         },
         "node_modules/@types/express": {
-            "version": "4.17.21",
+            "version": "5.0.0",
+            "resolved": "https://registry.npmjs.org/@types/express/-/express-5.0.0.tgz",
+            "integrity": "sha512-DvZriSMehGHL1ZNLzi6MidnsDhUZM/x2pRdDIKdwbUNqqwHxMlRdkxtn6/EPKyqKpHqTl/4nRZsRNLpZxZRpPQ==",
             "dev": true,
             "license": "MIT",
             "dependencies": {
                 "@types/body-parser": "*",
-                "@types/express-serve-static-core": "^4.17.33",
+                "@types/express-serve-static-core": "^5.0.0",
                 "@types/qs": "*",
                 "@types/serve-static": "*"
             }
@@ -7370,19 +7372,6 @@
                 "@types/express": "*"
             }
         },
-        "node_modules/@types/express/node_modules/@types/express-serve-static-core": {
-            "version": "4.19.6",
-            "resolved": "https://registry.npmjs.org/@types/express-serve-static-core/-/express-serve-static-core-4.19.6.tgz",
-            "integrity": "sha512-N4LZ2xG7DatVqhCZzOGb1Yi5lMbXSZcmdLDe9EzSndPV2HpWYWzRbaerl2n27irrm94EPpprqa8KpskPT085+A==",
-            "dev": true,
-            "license": "MIT",
-            "dependencies": {
-                "@types/node": "*",
-                "@types/qs": "*",
-                "@types/range-parser": "*",
-                "@types/send": "*"
-            }
-        },
         "node_modules/@types/fs-extra": {
             "version": "11.0.4",
             "dev": true,
@@ -29351,6 +29340,32 @@
                 }
             }
         },
+        "node_modules/webpack-dev-server/node_modules/@types/express": {
+            "version": "4.17.21",
+            "resolved": "https://registry.npmjs.org/@types/express/-/express-4.17.21.tgz",
+            "integrity": "sha512-ejlPM315qwLpaQlQDTjPdsUFSc6ZsP4AN6AlWnogPjQ7CVi7PYF3YVz+CY3jE2pwYf7E/7HlDAN0rV2GxTG0HQ==",
+            "dev": true,
+            "license": "MIT",
+            "dependencies": {
+                "@types/body-parser": "*",
+                "@types/express-serve-static-core": "^4.17.33",
+                "@types/qs": "*",
+                "@types/serve-static": "*"
+            }
+        },
+        "node_modules/webpack-dev-server/node_modules/@types/express-serve-static-core": {
+            "version": "4.19.6",
+            "resolved": "https://registry.npmjs.org/@types/express-serve-static-core/-/express-serve-static-core-4.19.6.tgz",
+            "integrity": "sha512-N4LZ2xG7DatVqhCZzOGb1Yi5lMbXSZcmdLDe9EzSndPV2HpWYWzRbaerl2n27irrm94EPpprqa8KpskPT085+A==",
+            "dev": true,
+            "license": "MIT",
+            "dependencies": {
+                "@types/node": "*",
+                "@types/qs": "*",
+                "@types/range-parser": "*",
+                "@types/send": "*"
+            }
+        },
         "node_modules/webpack-dev-server/node_modules/http-proxy-middleware": {
             "version": "2.0.7",
             "resolved": "https://registry.npmjs.org/http-proxy-middleware/-/http-proxy-middleware-2.0.7.tgz",
@@ -30251,7 +30266,7 @@
                 "cache-manager": "4.1.0",
                 "cache-manager-redis-store": "2.0.0",
                 "debug": "^4.3.4",
-                "dotenv": "^16.4.7",
+                "dotenv": "^16.0.3",
                 "express": "4.21.2",
                 "express-fileupload": "^1.4.0",
                 "fs-extra": "11.3.0",
@@ -30266,7 +30281,7 @@
                 "tmp-promise": "3.0.3"
             },
             "devDependencies": {
-                "@types/express": "4.17.21",
+                "@types/express": "5.0.0",
                 "@types/puppeteer": "7.0.4",
                 "@types/react": "18.3.18",
                 "puppeteer": "17.1.3",
@@ -30282,9 +30297,9 @@
                 "express": "4.21.2"
             },
             "devDependencies": {
-                "@types/express": "4.17.21",
+                "@types/express": "5.0.0",
                 "@types/express-fileupload": "1.5.1",
-                "@types/express-serve-static-core": "^5.0.5",
+                "@types/express-serve-static-core": "5.0.5",
                 "@types/supertest": "6.0.2",
                 "axios": "1.7.9",
                 "axios-mock-adapter": "2.1.0",
@@ -30304,7 +30319,7 @@
                 "@types/uglify-js": "^3.17.5",
                 "fs-extra": "11.3.0",
                 "mime-types": "^2.1.35",
-                "postcss": "^8.5.1",
+                "postcss": "^8.4.23",
                 "postcss-clean": "^1.2.2",
                 "postcss-import": "^16.0.0",
                 "postcss-safe-parser": "^7.0.0",
@@ -30373,7 +30388,7 @@
                 "@fortawesome/react-fontawesome": "0.2.2",
                 "@lumieducation/h5p-react": "^9.3.2",
                 "bootstrap": "5.3.3",
-                "http-proxy-middleware": "^3.0.3",
+                "http-proxy-middleware": "3.0.3",
                 "react": "18.3.1",
                 "react-bootstrap": "2.10.7",
                 "react-dom": "18.3.1"
@@ -30418,7 +30433,7 @@
             "devDependencies": {
                 "@types/cors": "2.8.17",
                 "@types/csurf": "1.11.5",
-                "@types/express": "4.17.21",
+                "@types/express": "5.0.0",
                 "@types/express-session": "1.18.1",
                 "@types/passport": "1.0.17",
                 "@types/passport-local": "1.0.38",
diff --git a/packages/h5p-examples/package.json b/packages/h5p-examples/package.json
index 14c96a7d6..13ad4acf9 100644
--- a/packages/h5p-examples/package.json
+++ b/packages/h5p-examples/package.json
@@ -46,7 +46,7 @@
         "tmp-promise": "3.0.3"
     },
     "devDependencies": {
-        "@types/express": "4.17.21",
+        "@types/express": "5.0.0",
         "@types/puppeteer": "7.0.4",
         "@types/react": "18.3.18",
         "puppeteer": "17.1.3",
diff --git a/packages/h5p-express/package.json b/packages/h5p-express/package.json
index 7ec79298e..ea1a78e8b 100644
--- a/packages/h5p-express/package.json
+++ b/packages/h5p-express/package.json
@@ -51,7 +51,7 @@
     "devDependencies": {
         "@types/express-fileupload": "1.5.1",
         "@types/express-serve-static-core": "5.0.5",
-        "@types/express": "4.17.21",
+        "@types/express": "5.0.0",
         "@types/supertest": "6.0.2",
         "axios-mock-adapter": "2.1.0",
         "axios": "1.7.9",
diff --git a/packages/h5p-rest-example-server/package.json b/packages/h5p-rest-example-server/package.json
index df8c0abb2..ed5402e43 100644
--- a/packages/h5p-rest-example-server/package.json
+++ b/packages/h5p-rest-example-server/package.json
@@ -40,7 +40,7 @@
         "@types/cors": "2.8.17",
         "@types/csurf": "1.11.5",
         "@types/express-session": "1.18.1",
-        "@types/express": "4.17.21",
+        "@types/express": "5.0.0",
         "@types/passport-local": "1.0.38",
         "@types/passport": "1.0.17",
         "ts-node": "10.9.2",