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diff --git a/client-mobile/.gradle/8.5/fileHashes/fileHashes.bin b/client-mobile/.gradle/8.5/fileHashes/fileHashes.bin
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index f71c130..29b3287 100644
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diff --git a/client-mobile/.gradle/buildOutputCleanup/buildOutputCleanup.lock b/client-mobile/.gradle/buildOutputCleanup/buildOutputCleanup.lock
index 33b05b9..d07e95f 100644
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diff --git a/client-mobile/.gradle/buildOutputCleanup/outputFiles.bin b/client-mobile/.gradle/buildOutputCleanup/outputFiles.bin
index f8b929d..e9010d6 100644
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diff --git a/client-mobile/auth/data/remote/api/AuthApi.kt b/client-mobile/auth/data/remote/api/AuthApi.kt
index 9a68f1e..07a5104 100644
--- a/client-mobile/auth/data/remote/api/AuthApi.kt
+++ b/client-mobile/auth/data/remote/api/AuthApi.kt
@@ -2,6 +2,7 @@ package auth.data.remote.api
 
 import auth.data.remote.dto.AuthRequest
 import auth.data.remote.dto.AuthResponse
+import auth.data.remote.dto.RefreshTokenRequest
 import core.domain.model.ServerConfigModel
 import retrofit2.http.Body
 import retrofit2.http.GET
@@ -10,13 +11,14 @@ import retrofit2.http.POST
 
 interface AuthApi {
     @POST("auth/login")
-    @Headers("Cache-Control: no-cache")
     suspend fun login(@Body request: AuthRequest): AuthResponse
 
     @POST("auth/register")
-    @Headers("Cache-Control: no-cache")
     suspend fun register(@Body request: AuthRequest): AuthResponse
 
+    @POST("auth/refresh")
+    suspend fun refreshToken(@Body request: RefreshTokenRequest): AuthResponse
+
     @GET("config")
     @Headers("Cache-Control: no-cache")
     suspend fun getConfig(): ServerConfigModel
diff --git a/client-mobile/auth/data/remote/dto/AuthDtos.kt b/client-mobile/auth/data/remote/dto/AuthDtos.kt
index 869964a..cac9089 100644
--- a/client-mobile/auth/data/remote/dto/AuthDtos.kt
+++ b/client-mobile/auth/data/remote/dto/AuthDtos.kt
@@ -9,6 +9,7 @@ data class AuthRequest(
 
 data class AuthResponse(
     @SerializedName("accessToken") val accessToken: String?,
+    @SerializedName("refreshToken") val refreshToken: String?,
     @SerializedName("user") val user: UserDto?,
     @SerializedName("userId") val userId: String?,
     @SerializedName("username") val username: String?,
@@ -21,3 +22,7 @@ data class UserDto(
     @SerializedName("displayName") val displayName: String?,
     @SerializedName("avatarUrl") val avatarUrl: String?
 )
+
+data class RefreshTokenRequest(
+    @SerializedName("refreshToken") val refreshToken: String
+)
diff --git a/client-mobile/auth/data/repository/AuthRepositoryImpl.kt b/client-mobile/auth/data/repository/AuthRepositoryImpl.kt
index 5eaf0fb..8b6fae5 100644
--- a/client-mobile/auth/data/repository/AuthRepositoryImpl.kt
+++ b/client-mobile/auth/data/repository/AuthRepositoryImpl.kt
@@ -2,6 +2,7 @@ package auth.data.repository
 
 import auth.data.remote.api.AuthApi
 import auth.data.remote.dto.AuthRequest
+import auth.data.remote.dto.RefreshTokenRequest
 import auth.domain.model.AuthResult
 import auth.domain.repository.AuthRepository
 import core.network.ServerConfig
@@ -25,12 +26,13 @@ class AuthRepositoryImpl @Inject constructor(
             val token = response.accessToken ?: return Result.failure(Exception("Token is null"))
             val userId = response.userId ?: ""
             
-            tokenManager.saveToken(token, userId)
+            tokenManager.saveToken(token, userId, response.refreshToken)
             _isAuthenticated.value = true
             fetchConfig()
             Result.success(
                 AuthResult(
                     token = token,
+                    refreshToken = response.refreshToken,
                     userId = userId,
                     userName = response.username ?: userName,
                     displayName = response.displayName ?: response.username ?: userName,
@@ -48,12 +50,13 @@ class AuthRepositoryImpl @Inject constructor(
             val token = response.accessToken ?: return Result.failure(Exception("Token is null"))
             val userId = response.userId ?: ""
 
-            tokenManager.saveToken(token, userId)
+            tokenManager.saveToken(token, userId, response.refreshToken)
             _isAuthenticated.value = true
             fetchConfig()
             Result.success(
                 AuthResult(
                     token = token,
+                    refreshToken = response.refreshToken,
                     userId = userId,
                     userName = response.username ?: userName,
                     displayName = response.displayName ?: response.username ?: userName,
@@ -95,4 +98,34 @@ class AuthRepositoryImpl @Inject constructor(
             // Silent fail
         }
     }
+
+    override suspend fun refreshToken(): Result<AuthResult> {
+        val currentRefreshToken = tokenManager.getRefreshToken()
+        if (currentRefreshToken == null) {
+            return Result.failure(Exception("Refresh token is null"))
+        }
+
+        return try {
+            val response = api.refreshToken(RefreshTokenRequest(currentRefreshToken))
+            val newAccessToken = response.accessToken ?: return Result.failure(Exception("New access token is null"))
+            val newRefreshToken = response.refreshToken
+            val userId = response.userId ?: ""
+
+            tokenManager.saveToken(newAccessToken, userId, newRefreshToken)
+            _isAuthenticated.value = true
+
+            Result.success(
+                AuthResult(
+                    token = newAccessToken,
+                    refreshToken = newRefreshToken,
+                    userId = userId,
+                    userName = response.username ?: "",
+                    displayName = response.displayName ?: "",
+                    avatarUrl = null
+                )
+            )
+        } catch (e: Exception) {
+            Result.failure(e)
+        }
+    }
 }
diff --git a/client-mobile/auth/domain/model/AuthModels.kt b/client-mobile/auth/domain/model/AuthModels.kt
index 45d28bd..06ac946 100644
--- a/client-mobile/auth/domain/model/AuthModels.kt
+++ b/client-mobile/auth/domain/model/AuthModels.kt
@@ -2,6 +2,7 @@ package auth.domain.model
 
 data class AuthResult(
     val token: String,
+    val refreshToken: String?,
     val userId: String,
     val userName: String,
     val displayName: String,
diff --git a/client-mobile/auth/domain/repository/AuthRepository.kt b/client-mobile/auth/domain/repository/AuthRepository.kt
index 9237d30..781d4a7 100644
--- a/client-mobile/auth/domain/repository/AuthRepository.kt
+++ b/client-mobile/auth/domain/repository/AuthRepository.kt
@@ -10,4 +10,5 @@ interface AuthRepository {
     fun isAuthenticated(): Boolean
     fun isAuthenticatedFlow(): kotlinx.coroutines.flow.StateFlow<Boolean>
     suspend fun updatePushToken(token: String)
+    suspend fun refreshToken(): Result<AuthResult>
 }
diff --git a/client-mobile/auth/presentation/AuthViewModel.kt b/client-mobile/auth/presentation/AuthViewModel.kt
index 990e87b..be8ab94 100644
--- a/client-mobile/auth/presentation/AuthViewModel.kt
+++ b/client-mobile/auth/presentation/AuthViewModel.kt
@@ -69,6 +69,18 @@ class AuthViewModel @Inject constructor(
         }
     }
 
+    fun refreshToken() {
+        viewModelScope.launch {
+            repository.refreshToken()
+                .onSuccess {
+                    // Token refreshed successfully
+                }
+                .onFailure {
+                    // Refresh failed, will trigger logout via AuthInterceptor
+                }
+        }
+    }
+
     private fun updatePushToken() {
         FirebaseMessaging.getInstance().token.addOnCompleteListener { task ->
             if (task.isSuccessful) {
diff --git a/client-mobile/core/network/AuthInterceptor.kt b/client-mobile/core/network/AuthInterceptor.kt
index 16a9f3c..d0f8502 100644
--- a/client-mobile/core/network/AuthInterceptor.kt
+++ b/client-mobile/core/network/AuthInterceptor.kt
@@ -5,9 +5,7 @@ import okhttp3.Interceptor
 import okhttp3.Response
 import javax.inject.Inject
 import javax.inject.Singleton
-import kotlinx.coroutines.launch
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.runBlocking
 
 @Singleton
 class AuthInterceptor @Inject constructor(
@@ -15,6 +13,10 @@ class AuthInterceptor @Inject constructor(
     private val navigationManager: core.utils.NavigationManager,
     private val authRepositoryProvider: javax.inject.Provider<auth.domain.repository.AuthRepository>
 ) : Interceptor {
+    
+    @Volatile
+    private var isRefreshing = false
+    
     override fun intercept(chain: Interceptor.Chain): Response {
         val token = tokenManager.getToken()
         val request = chain.request().newBuilder().apply {
@@ -23,16 +25,55 @@ class AuthInterceptor @Inject constructor(
             }
         }.build()
         
-        val response = chain.proceed(request)
+        var response = chain.proceed(request)
         
         if (response.code == 401) {
-            // Global logout
-            kotlinx.coroutines.GlobalScope.launch(kotlinx.coroutines.Dispatchers.Main) {
-                authRepositoryProvider.get().logout()
-                navigationManager.logout()
+            // Attempt to refresh token synchronously
+            val refreshedToken = refreshAuthToken()
+            
+            if (refreshedToken != null) {
+                // Close the old response before retrying
+                response.close()
+                
+                // Retry the original request with the new token
+                val retryRequest = chain.request().newBuilder()
+                    .addHeader("Authorization", "Bearer $refreshedToken")
+                    .build()
+                response = chain.proceed(retryRequest)
+            } else {
+                // Refresh failed, logout
+                logoutUser()
             }
         }
         
         return response
     }
+    
+    private fun refreshAuthToken(): String? {
+        if (isRefreshing) {
+            // Already refreshing, wait and return current token
+            return tokenManager.getToken()
+        }
+        
+        return runBlocking {
+            isRefreshing = true
+            try {
+                val result = authRepositoryProvider.get().refreshToken()
+                if (result.isSuccess) {
+                    result.getOrNull()?.token
+                } else {
+                    null
+                }
+            } finally {
+                isRefreshing = false
+            }
+        }
+    }
+    
+    private fun logoutUser() {
+        runBlocking {
+            authRepositoryProvider.get().logout()
+        }
+        navigationManager.logout()
+    }
 }
diff --git a/client-mobile/core/security/TokenManager.kt b/client-mobile/core/security/TokenManager.kt
index abc4c4e..112ab94 100644
--- a/client-mobile/core/security/TokenManager.kt
+++ b/client-mobile/core/security/TokenManager.kt
@@ -20,11 +20,14 @@ class TokenManager @Inject constructor(context: Context) {
         EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
     )
 
-    fun saveToken(token: String, userId: String? = null) {
+    fun saveToken(token: String, userId: String? = null, refreshToken: String? = null) {
         val editor = prefs.edit().putString("jwt_token", token)
         if (userId != null) {
             editor.putString("user_id", userId)
         }
+        if (refreshToken != null) {
+            editor.putString("refresh_token", refreshToken)
+        }
         editor.apply()
     }
 
@@ -32,11 +35,15 @@ class TokenManager @Inject constructor(context: Context) {
         return prefs.getString("jwt_token", null)
     }
 
+    fun getRefreshToken(): String? {
+        return prefs.getString("refresh_token", null)
+    }
+
     fun getUserId(): String? {
         return prefs.getString("user_id", null)
     }
 
     fun deleteToken() {
-        prefs.edit().remove("jwt_token").remove("user_id").apply()
+        prefs.edit().remove("jwt_token").remove("user_id").remove("refresh_token").apply()
     }
 }