diff --git a/.idea/misc.xml b/.idea/misc.xml
index 0ad17cb..2904b84 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,5 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="EntryPointsManager">
+    <list size="2">
+      <item index="0" class="java.lang.String" itemvalue="dagger.Module" />
+      <item index="1" class="java.lang.String" itemvalue="dagger.Provides" />
+    </list>
+  </component>
   <component name="ExternalStorageConfigurationManager" enabled="true" />
   <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 27e25b0..5e5bffb 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -32,8 +32,8 @@ android {
         applicationId = "ru.n08i40k.polytechnic.next"
         minSdk = 26
         targetSdk = 35
-        versionCode = 2
-        versionName = "1.1"
+        versionCode = 3
+        versionName = "1.2"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/data/schedule/impl/RemoteScheduleRepository.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/data/schedule/impl/RemoteScheduleRepository.kt
index f460137..3134a6a 100644
--- a/app/src/main/java/ru/n08i40k/polytechnic/next/data/schedule/impl/RemoteScheduleRepository.kt
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/data/schedule/impl/RemoteScheduleRepository.kt
@@ -1,7 +1,10 @@
 package ru.n08i40k.polytechnic.next.data.schedule.impl
 
 import android.content.Context
+import com.android.volley.Request
+import com.android.volley.ServerError
 import com.android.volley.toolbox.RequestFuture
+import com.android.volley.toolbox.StringRequest
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.map
@@ -10,14 +13,67 @@ import kotlinx.coroutines.withContext
 import ru.n08i40k.polytechnic.next.data.MyResult
 import ru.n08i40k.polytechnic.next.data.schedule.ScheduleRepository
 import ru.n08i40k.polytechnic.next.model.Group
+import ru.n08i40k.polytechnic.next.network.NetworkConnection
 import ru.n08i40k.polytechnic.next.network.data.schedule.ScheduleGetRequest
 import ru.n08i40k.polytechnic.next.network.data.schedule.ScheduleGetRequestData
 import ru.n08i40k.polytechnic.next.network.data.schedule.ScheduleGetResponse
+import ru.n08i40k.polytechnic.next.network.data.schedule.ScheduleUpdateRequest
+import ru.n08i40k.polytechnic.next.network.data.schedule.ScheduleUpdateRequestData
 import ru.n08i40k.polytechnic.next.settings.settingsDataStore
+import java.util.logging.Logger
+import kotlin.io.encoding.Base64
+import kotlin.io.encoding.ExperimentalEncodingApi
 
 class RemoteScheduleRepository(private val context: Context) : ScheduleRepository {
+    @OptIn(ExperimentalEncodingApi::class)
+    suspend fun getMainPage(): MyResult<String> {
+        return withContext(Dispatchers.IO) {
+            val mainPageFuture = RequestFuture.newFuture<String>()
+            val request = StringRequest(
+                Request.Method.GET,
+                "https://politehnikum-eng.ru/index/raspisanie_zanjatij/0-409",
+                mainPageFuture,
+                mainPageFuture
+            )
+            NetworkConnection.getInstance(context).addToRequestQueue(request)
+
+            try {
+                val encodedMainPage =
+                    Base64.Default.encode(mainPageFuture.get().encodeToByteArray())
+                MyResult.Success(encodedMainPage)
+            } catch (exception: Exception) {
+                MyResult.Failure(exception)
+            }
+        }
+    }
+
+    suspend fun updateMainPage(): MyResult<Nothing> {
+        return withContext(Dispatchers.IO) {
+            val mainPage = getMainPage()
+
+            if (mainPage is MyResult.Failure)
+                return@withContext mainPage
+
+            val updateFuture = RequestFuture.newFuture<Nothing>()
+            ScheduleUpdateRequest(
+                ScheduleUpdateRequestData((mainPage as MyResult.Success<String>).data),
+                context,
+                updateFuture,
+                updateFuture
+            ).send()
+
+            try {
+                MyResult.Success(updateFuture.get())
+            } catch (exception: Exception) {
+                MyResult.Failure(exception)
+            }
+        }
+    }
+
     override suspend fun getGroup(): MyResult<Group> {
         return withContext(Dispatchers.IO) {
+            val logger = Logger.getLogger("RemoteScheduleRepository")
+
             val groupName = runBlocking {
                 context.settingsDataStore.data.map { settings -> settings.group }.first()
             }
@@ -25,16 +81,49 @@ class RemoteScheduleRepository(private val context: Context) : ScheduleRepositor
             if (groupName.isEmpty())
                 return@withContext MyResult.Failure(IllegalArgumentException("No group name provided!"))
 
-            val responseFuture = RequestFuture.newFuture<ScheduleGetResponse>()
+            val firstPassFuture = RequestFuture.newFuture<ScheduleGetResponse>()
             ScheduleGetRequest(
                 ScheduleGetRequestData(groupName),
                 context,
-                responseFuture,
-                responseFuture
+                firstPassFuture,
+                firstPassFuture
+            ).send()
+
+            var firstPassResponse: ScheduleGetResponse? = null
+
+            try {
+                firstPassResponse = firstPassFuture.get()
+                if (!firstPassResponse.updateRequired) {
+                    logger.info("Successfully get group schedule!")
+                    return@withContext MyResult.Success(firstPassFuture.get().group)
+                }
+                logger.info("Successfully get group schedule, but it needs to update!")
+            } catch (exception: Exception) {
+                if (exception.cause !is ServerError)
+                    return@withContext MyResult.Failure(exception)
+                logger.info("Can't get group schedule, because it needs to first update!")
+            }
+
+            val updateResult = updateMainPage()
+            if (updateResult is MyResult.Failure) {
+                logger.info("Can't update site main page!")
+                if (firstPassResponse != null)
+                    return@withContext MyResult.Success(firstPassResponse.group)
+
+                return@withContext updateResult
+            }
+            logger.info("Site main page successfully updated!")
+
+            val secondPassFuture = RequestFuture.newFuture<ScheduleGetResponse>()
+            ScheduleGetRequest(
+                ScheduleGetRequestData(groupName),
+                context,
+                secondPassFuture,
+                secondPassFuture
             ).send()
 
             try {
-                MyResult.Success(responseFuture.get().group)
+                MyResult.Success(secondPassFuture.get().group)
             } catch (exception: Exception) {
                 MyResult.Failure(exception)
             }
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/network/data/schedule/ScheduleGetResponse.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/network/data/schedule/ScheduleGetResponse.kt
index bf6620a..b1a3918 100644
--- a/app/src/main/java/ru/n08i40k/polytechnic/next/network/data/schedule/ScheduleGetResponse.kt
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/network/data/schedule/ScheduleGetResponse.kt
@@ -8,5 +8,6 @@ data class ScheduleGetResponse(
     val updatedAt: String,
     val group: Group,
     val etag: String,
-    val lastChangedDays: ArrayList<Int>
+    val lastChangedDays: ArrayList<Int>,
+    val updateRequired: Boolean
 )
\ No newline at end of file
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/network/data/schedule/ScheduleUpdate.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/network/data/schedule/ScheduleUpdate.kt
new file mode 100644
index 0000000..2c0da64
--- /dev/null
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/network/data/schedule/ScheduleUpdate.kt
@@ -0,0 +1,22 @@
+package ru.n08i40k.polytechnic.next.network.data.schedule
+
+import android.content.Context
+import com.android.volley.Response
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import ru.n08i40k.polytechnic.next.network.data.AuthorizedRequest
+
+class ScheduleUpdateRequest(
+    private val data: ScheduleUpdateRequestData,
+    context: Context,
+    listener: Response.Listener<Nothing>,
+    errorListener: Response.ErrorListener? = null
+) : AuthorizedRequest(
+    context, Method.POST, "schedule/update-site-main-page", Response.Listener<String> {
+        listener.onResponse(null)
+    }, errorListener
+) {
+    override fun getBody(): ByteArray {
+        return Json.encodeToString(data).toByteArray()
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/ru/n08i40k/polytechnic/next/network/data/schedule/ScheduleUpdateRequestData.kt b/app/src/main/java/ru/n08i40k/polytechnic/next/network/data/schedule/ScheduleUpdateRequestData.kt
new file mode 100644
index 0000000..092c41d
--- /dev/null
+++ b/app/src/main/java/ru/n08i40k/polytechnic/next/network/data/schedule/ScheduleUpdateRequestData.kt
@@ -0,0 +1,6 @@
+package ru.n08i40k.polytechnic.next.network.data.schedule
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class ScheduleUpdateRequestData(val mainPage: String)
\ No newline at end of file