diff --git a/DevLog/App/Assembler/DataAssembler.swift b/DevLog/App/Assembler/DataAssembler.swift
index fc63bd62..ebe70a5b 100644
--- a/DevLog/App/Assembler/DataAssembler.swift
+++ b/DevLog/App/Assembler/DataAssembler.swift
@@ -33,7 +33,10 @@ final class DataAssembler: Assembler {
         }
 
         container.register(AuthSessionRepository.self) {
-            AuthSessionRepositoryImpl(authService: container.resolve(AuthService.self))
+            AuthSessionRepositoryImpl(
+                authService: container.resolve(AuthService.self),
+                userDefaultsStore: container.resolve(UserDefaultsStore.self)
+            )
         }
 
         container.register(AuthDataRepository.self) {
diff --git a/DevLog/Data/Repository/AuthSessionRepositoryImpl.swift b/DevLog/Data/Repository/AuthSessionRepositoryImpl.swift
index 64357050..ca15eec6 100644
--- a/DevLog/Data/Repository/AuthSessionRepositoryImpl.swift
+++ b/DevLog/Data/Repository/AuthSessionRepositoryImpl.swift
@@ -9,9 +9,11 @@ import Combine
 
 final class AuthSessionRepositoryImpl: AuthSessionRepository {
     private let authService: AuthService
+    private let userDefaultsStore: UserDefaultsStore
 
-    init(authService: AuthService) {
+    init(authService: AuthService, userDefaultsStore: UserDefaultsStore) {
         self.authService = authService
+        self.userDefaultsStore = userDefaultsStore
         self.signIn = authService.uid != nil
     }
 
@@ -22,6 +24,9 @@ final class AuthSessionRepositoryImpl: AuthSessionRepository {
     }
 
     func setSession(_ signedIn: Bool) {
+        if !signedIn {
+            userDefaultsStore.removeAll()
+        }
         self.signIn = signedIn
     }
 }
diff --git a/DevLog/Storage/Persistence/UserDefaultsStore.swift b/DevLog/Storage/Persistence/UserDefaultsStore.swift
index 4c964719..bf3e371b 100644
--- a/DevLog/Storage/Persistence/UserDefaultsStore.swift
+++ b/DevLog/Storage/Persistence/UserDefaultsStore.swift
@@ -37,4 +37,9 @@ final class UserDefaultsStore {
     func setBool(_ value: Bool, forKey key: String) {
         userDefaults.set(value, forKey: key)
     }
+
+    func removeAll() {
+        guard let bundleIdentifier = Bundle.main.bundleIdentifier else { return }
+        userDefaults.removePersistentDomain(forName: bundleIdentifier)
+    }
 }