diff --git a/src/main/kotlin/org/gitanimals/render/domain/Persona.kt b/src/main/kotlin/org/gitanimals/render/domain/Persona.kt
index 149ae13..4635a8b 100644
--- a/src/main/kotlin/org/gitanimals/render/domain/Persona.kt
+++ b/src/main/kotlin/org/gitanimals/render/domain/Persona.kt
@@ -19,6 +19,9 @@ class Persona(
     @Embedded
     val level: Level,
 
+    @Column(name = "visible", nullable = false)
+    val visible: Boolean,
+
     @JsonIgnore
     @JoinColumn(name = "user_id")
     @ManyToOne(fetch = FetchType.LAZY, optional = false)
@@ -28,10 +31,16 @@ class Persona(
     constructor(
         type: PersonaType,
         level: Long,
-    ) : this(type = type, level = Level(level))
+        visible: Boolean
+    ) : this(type = type, level = Level(level), visible = visible)
 
 
-    fun toSvg(): String = type.load(this)
+    fun toSvg(): String {
+        if (!visible) {
+            return ""
+        }
+        return type.load(this)
+    }
 
     fun level(): Long = level.value
 }
diff --git a/src/main/kotlin/org/gitanimals/render/domain/User.kt b/src/main/kotlin/org/gitanimals/render/domain/User.kt
index 908f997..c831a33 100644
--- a/src/main/kotlin/org/gitanimals/render/domain/User.kt
+++ b/src/main/kotlin/org/gitanimals/render/domain/User.kt
@@ -63,7 +63,12 @@ class User(
     fun updateContribution(contribution: Int) {
         val currentYear = ZonedDateTime.now(ZoneId.of("UTC")).year
         val currentYearContribution =
-            contributions.first { it.year == currentYear }
+            contributions.firstOrNull { it.year == currentYear }
+                ?: run {
+                    val currentYearContribution = Contribution(currentYear, 0, Instant.now())
+                    contributions.add(currentYearContribution)
+                    currentYearContribution
+                }
 
         val newContribution = contribution - currentYearContribution.contribution
 
@@ -71,7 +76,6 @@ class User(
         lastPersonaGivePoint += newContribution
         currentYearContribution.lastUpdatedContribution = Instant.now()
         levelUpPersonas(newContribution)
-        giveNewPersona()
     }
 
     private fun levelUpPersonas(newContribution: Int) {
@@ -86,15 +90,27 @@ class User(
         }
     }
 
-    private fun giveNewPersona() {
+    fun giveNewPersona() {
         if (lastPersonaGivePoint < FOR_NEW_PERSONA_COUNT) {
             return
         }
         lastPersonaGivePoint %= FOR_NEW_PERSONA_COUNT.toInt()
-        if (personas.size >= MAX_PERSONA_COUNT) {
-            return
+
+        val newPersona = when (personas.size >= MAX_PERSONA_COUNT) {
+            true -> Persona(
+                type = PersonaType.random(),
+                level = Level(0),
+                visible = false,
+                user = this
+            )
+
+            false -> Persona(
+                type = PersonaType.random(),
+                level = Level(0),
+                visible = true,
+                user = this
+            )
         }
-        val newPersona = Persona(type = PersonaType.random(), level = Level(0), user = this)
         personas.add(newPersona)
     }
 
@@ -202,7 +218,7 @@ class User(
                     max((totalContributionCount / FOR_INIT_PERSONA_COUNT), 1)
                 ).toInt()
             ) {
-                personas.add(Persona(PersonaType.random(), 0))
+                personas.add(Persona(PersonaType.random(), 0, true))
             }
             return personas
         }
diff --git a/src/main/kotlin/org/gitanimals/render/domain/UserService.kt b/src/main/kotlin/org/gitanimals/render/domain/UserService.kt
index 9955a90..66df64e 100644
--- a/src/main/kotlin/org/gitanimals/render/domain/UserService.kt
+++ b/src/main/kotlin/org/gitanimals/render/domain/UserService.kt
@@ -1,6 +1,6 @@
 package org.gitanimals.render.domain
 
-import org.springframework.dao.OptimisticLockingFailureException
+import org.springframework.orm.ObjectOptimisticLockingFailureException
 import org.springframework.retry.annotation.Retryable
 import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
@@ -21,17 +21,18 @@ class UserService(
         return getUserByName(username).createLineAnimation(personaId)
     }
 
-    @Retryable(retryFor = [OptimisticLockingFailureException::class], maxAttempts = 10)
+    @Retryable(retryFor = [ObjectOptimisticLockingFailureException::class], maxAttempts = 10)
     @Transactional
     fun increaseVisit(username: String) {
         getUserByName(username).increaseVisitCount()
     }
 
-    @Retryable(retryFor = [OptimisticLockingFailureException::class], maxAttempts = 10)
+    @Retryable(retryFor = [ObjectOptimisticLockingFailureException::class], maxAttempts = 10)
     @Transactional
     fun updateContributions(username: String, contribution: Int) {
-        getUserByName(username)
-            .updateContribution(contribution)
+        val user = getUserByName(username)
+        user.updateContribution(contribution)
+        user.giveNewPersona()
     }
 
     fun isContributionUpdatedBeforeOneHour(name: String): Boolean =
diff --git a/src/test/kotlin/org/gitanimals/render/domain/UserTest.kt b/src/test/kotlin/org/gitanimals/render/domain/UserTest.kt
index 40e40a3..81e32d0 100644
--- a/src/test/kotlin/org/gitanimals/render/domain/UserTest.kt
+++ b/src/test/kotlin/org/gitanimals/render/domain/UserTest.kt
@@ -63,6 +63,18 @@ internal class UserTest : DescribeSpec({
             }
         }
     }
+
+    describe("giveNewPersona 메소드는") {
+        val user = User.newUser("new-user", mutableMapOf())
+        context("펫이 30마리가 넘을경우, visible false의 pet을 생성한다.") {
+            repeat(99) {
+                user.updateContribution(30 * (it + 1))
+                user.giveNewPersona()
+            }
+
+            user.personas.count { !it.visible } shouldBeEqual 70
+        }
+    }
 }) {
     private companion object {
         private const val ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"