diff --git a/packages/twenty-server/package.json b/packages/twenty-server/package.json
index 723a3308de..0d6af0a851 100644
--- a/packages/twenty-server/package.json
+++ b/packages/twenty-server/package.json
@@ -138,7 +138,7 @@
     "ms": "2.1.3",
     "nest-commander": "^3.19.1",
     "node-ical": "^0.21.0",
-    "nodemailer": "^8.0.5",
+    "nodemailer": "^9.0.1",
     "openapi-types": "12.1.3",
     "openid-client": "^5.7.0",
     "otplib": "^12.0.1",
diff --git a/packages/twenty-server/src/engine/core-modules/application/application-package/constants/seed-dependencies/package.json b/packages/twenty-server/src/engine/core-modules/application/application-package/constants/seed-dependencies/package.json
index 19d0c3832c..16c9eecce4 100644
--- a/packages/twenty-server/src/engine/core-modules/application/application-package/constants/seed-dependencies/package.json
+++ b/packages/twenty-server/src/engine/core-modules/application/application-package/constants/seed-dependencies/package.json
@@ -36,7 +36,7 @@
     "lodash.pickby": "^4.6.0",
     "lodash.snakecase": "^4.1.1",
     "lodash.upperfirst": "^4.3.1",
-    "nodemailer": "^8.0.5",
+    "nodemailer": "^9.0.1",
     "psl": "^1.15.0",
     "sharp": "^0.34.5",
     "uuid": "^11.1.1",
diff --git a/packages/twenty-server/src/engine/core-modules/application/application-package/constants/seed-dependencies/yarn.lock b/packages/twenty-server/src/engine/core-modules/application/application-package/constants/seed-dependencies/yarn.lock
index 9c8db8e20a..b1bb12ecca 100644
--- a/packages/twenty-server/src/engine/core-modules/application/application-package/constants/seed-dependencies/yarn.lock
+++ b/packages/twenty-server/src/engine/core-modules/application/application-package/constants/seed-dependencies/yarn.lock
@@ -2207,10 +2207,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"nodemailer@npm:^8.0.5":
-  version: 8.0.10
-  resolution: "nodemailer@npm:8.0.10"
-  checksum: 10c0/b96fd2ea7146de58141219061e094509fd0f19aac5ac86ac35d9ce9c479dbf6c12b143fa7e7050a1be539a3542eb59520c33aabf5a119c8d28fc7d151bde329f
+"nodemailer@npm:^9.0.1":
+  version: 9.0.1
+  resolution: "nodemailer@npm:9.0.1"
+  checksum: 10c0/4213f01aa211127c1ce33243c5e45e7f831601a933d03fa864cd827b1bd5ea2782cb4b43722bee7028cbc193733d9802dad1120fe67181448eb0b7de52218a37
   languageName: node
   linkType: hard
 
@@ -2537,7 +2537,7 @@ __metadata:
     lodash.pickby: "npm:^4.6.0"
     lodash.snakecase: "npm:^4.1.1"
     lodash.upperfirst: "npm:^4.3.1"
-    nodemailer: "npm:^8.0.5"
+    nodemailer: "npm:^9.0.1"
     psl: "npm:^1.15.0"
     sharp: "npm:^0.34.5"
     uuid: "npm:^11.1.1"
diff --git a/packages/twenty-server/src/engine/core-modules/application/application-package/utils/get-default-application-package-fields.util.ts b/packages/twenty-server/src/engine/core-modules/application/application-package/utils/get-default-application-package-fields.util.ts
index 3096238502..67196a8cc6 100644
--- a/packages/twenty-server/src/engine/core-modules/application/application-package/utils/get-default-application-package-fields.util.ts
+++ b/packages/twenty-server/src/engine/core-modules/application/application-package/utils/get-default-application-package-fields.util.ts
@@ -7,8 +7,8 @@ import { SEED_DEPENDENCIES_DIRNAME } from 'src/engine/core-modules/application/a
 // To regenerate: use logicFunctionCreateHash from logic-function-create-hash.utils.
 // package.json: hash(JSON.stringify(JSON.parse(content))). yarn.lock: hash(content).
 // Both use first 32 chars of SHA512 hex digest.
-const DEFAULT_PACKAGE_JSON_CHECKSUM = '6ec55ff4ec55f433415417c845bc5c04';
-const DEFAULT_YARN_LOCK_CHECKSUM = '57cfae64905e3804cc1df95a0fa0707d';
+const DEFAULT_PACKAGE_JSON_CHECKSUM = 'c05f7f23a158d61caa123c55b455530a';
+const DEFAULT_YARN_LOCK_CHECKSUM = 'bc70bafdc23193461aeaf7e35b2ee786';
 
 export type DefaultApplicationPackageFields = {
   packageJsonChecksum: string;
diff --git a/yarn.lock b/yarn.lock
index 12e7112c54..c7cf746f5a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -44137,10 +44137,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"nodemailer@npm:^8.0.5":
-  version: 8.0.11
-  resolution: "nodemailer@npm:8.0.11"
-  checksum: 10c0/19229216c63a32eae59d7b39f3dffeba20be317f2335d08d86fb70bd01845a1bf108fecd019c0e90ef186e3d9177cf478192b333cf38620ad0f8c7a6e1e5ae05
+"nodemailer@npm:^9.0.1":
+  version: 9.0.1
+  resolution: "nodemailer@npm:9.0.1"
+  checksum: 10c0/4213f01aa211127c1ce33243c5e45e7f831601a933d03fa864cd827b1bd5ea2782cb4b43722bee7028cbc193733d9802dad1120fe67181448eb0b7de52218a37
   languageName: node
   linkType: hard
 
@@ -54349,7 +54349,7 @@ __metadata:
     ms: "npm:2.1.3"
     nest-commander: "npm:^3.19.1"
     node-ical: "npm:^0.21.0"
-    nodemailer: "npm:^8.0.5"
+    nodemailer: "npm:^9.0.1"
     openapi-types: "npm:12.1.3"
     openid-client: "npm:^5.7.0"
     otplib: "npm:^12.0.1"