diff --git a/package-lock.json b/package-lock.json
index 2c1792b5..0e656a46 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -57,14 +57,6 @@
             "glob": "^7.1.3"
           }
         },
-        "semver": {
-          "version": "7.5.3",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.3.tgz",
-          "integrity": "sha512-QBlUtyVk/5EeHbi7X0fw6liDZc7BBmEaSYn01fMU1OUYbf6GPsbTtd8WmnqbI20SeycoHSeiybkE/q1Q+qlThQ==",
-          "requires": {
-            "lru-cache": "^6.0.0"
-          }
-        },
         "yallist": {
           "version": "4.0.0",
           "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
@@ -1250,6 +1242,11 @@
             "ms": "2.0.0"
           }
         },
+        "semver": {
+          "version": "5.7.2",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.2.tgz",
+          "integrity": "sha512-cBznnQ9KjJqU67B52RMC65CMarK2600WFnbkcaiwWq3xy/5haFJlshgnpjovMVJ+Hff49d8GEn0b87C5pDQ10g=="
+        },
         "strip-ansi": {
           "version": "4.0.0",
           "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
@@ -2403,9 +2400,9 @@
       },
       "dependencies": {
         "semver": {
-          "version": "6.3.0",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
-          "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw=="
+          "version": "6.3.1",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.1.tgz",
+          "integrity": "sha512-BR7VvDCVHO+q2xBEWskxS6DJE1qRnb7DxzUrogb71CWoSficBxYsiAGd+Kl0mmq/MprG9yArRkyrQxTO6XjMzA=="
         }
       }
     },
@@ -3102,6 +3099,13 @@
       "requires": {
         "resolve-from": "^2.0.0",
         "semver": "^5.1.0"
+      },
+      "dependencies": {
+        "semver": {
+          "version": "5.7.2",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.2.tgz",
+          "integrity": "sha512-cBznnQ9KjJqU67B52RMC65CMarK2600WFnbkcaiwWq3xy/5haFJlshgnpjovMVJ+Hff49d8GEn0b87C5pDQ10g=="
+        }
       }
     },
     "resolve-from": {
@@ -3190,9 +3194,27 @@
       "integrity": "sha1-e45lYZCyKOgaZq6nSEgNgozS03o="
     },
     "semver": {
-      "version": "5.5.0",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.0.tgz",
-      "integrity": "sha1-3Eu8emyp2Rbe5dQ1FvAJK1j3uKs="
+      "version": "7.5.4",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.4.tgz",
+      "integrity": "sha512-1bCSESV6Pv+i21Hvpxp3Dx+pSD8lIPt8uVjRrxAUt/nbswYc+tK6Y2btiULjd4+fnq15PX+nqQDC7Oft7WkwcA==",
+      "requires": {
+        "lru-cache": "^6.0.0"
+      },
+      "dependencies": {
+        "lru-cache": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+          "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+          "requires": {
+            "yallist": "^4.0.0"
+          }
+        },
+        "yallist": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+          "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
+        }
+      }
     },
     "send": {
       "version": "0.17.2",
@@ -3913,9 +3935,9 @@
       },
       "dependencies": {
         "semver": {
-          "version": "5.6.0",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-5.6.0.tgz",
-          "integrity": "sha512-RS9R6R35NYgQn++fkDWaOmqGoj4Ek9gGs+DPxNUZKuwE183xjJroKvyo1IzVFeXvUrvmALy6FWD5xrdJT25gMg=="
+          "version": "5.7.2",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.2.tgz",
+          "integrity": "sha512-cBznnQ9KjJqU67B52RMC65CMarK2600WFnbkcaiwWq3xy/5haFJlshgnpjovMVJ+Hff49d8GEn0b87C5pDQ10g=="
         }
       }
     },
diff --git a/src/core/user/UserRepository.ts b/src/core/user/UserRepository.ts
index 5f037a95..1ce6ecb1 100644
--- a/src/core/user/UserRepository.ts
+++ b/src/core/user/UserRepository.ts
@@ -27,6 +27,7 @@ let UserSchema = new mongoose.Schema({
   notificationCheckedAt: Date,                      // 새로운 알림이 있는지 확인하는 용도
   email: String,
   isEmailVerified: Boolean,
+  nickname: String,
   fcmKey: String,                                   // Firebase Message Key
 
   // if the user remove its account, active status becomes false
@@ -55,6 +56,7 @@ function fromMongoose(mongooseDocument: mongoose.MongooseDocument): User {
     notificationCheckedAt: wrapper.notificationCheckedAt,
     email: wrapper.email,
     isEmailVerified: wrapper.isEmailVerified,
+    nickname: wrapper.nickname,
     fcmKey: wrapper.fcmKey,
     active: wrapper.active,
     lastLoginTimestamp: wrapper.lastLoginTimestamp,
@@ -117,6 +119,7 @@ export function update(user: User): Promise<void> {
       userDocument.active = user.active;
       userDocument.lastLoginTimestamp = user.lastLoginTimestamp;
       userDocument.isEmailVerified = user.isEmailVerified;
+      userDocument.nickname = user.nickname;
       userDocument.save();
     })
 }
diff --git a/src/core/user/model/User.ts b/src/core/user/model/User.ts
index 4a85f151..7eb87a03 100644
--- a/src/core/user/model/User.ts
+++ b/src/core/user/model/User.ts
@@ -12,4 +12,5 @@ export default interface User {
   fcmKey?: string;
   active?: boolean;
   lastLoginTimestamp?: number;
+  nickname?: string;
 }