diff --git a/apps/canvas/back/package-lock.json b/apps/canvas/back/package-lock.json
index 03f0e80..25d7214 100644
--- a/apps/canvas/back/package-lock.json
+++ b/apps/canvas/back/package-lock.json
@@ -50,8 +50,11 @@
         "zod": "^3.24.4"
       },
       "devDependencies": {
+        "@types/jest": "^30.0.0",
         "eslint": "^9.13.0",
+        "jest": "^29.7.0",
         "prettier": "3.5.3",
+        "ts-jest": "^29.4.0",
         "typescript": "^5.8.3",
         "typescript-eslint": "^8.11.0"
       }