diff --git a/.github/workflows/merge_request.yml b/.github/workflows/merge_request.yml
index 476e2ed..247e9de 100644
--- a/.github/workflows/merge_request.yml
+++ b/.github/workflows/merge_request.yml
@@ -7,6 +7,4 @@ on:
 
 jobs:
   check:
-    uses: tinkoff-mobile-tech/workflows/.github/workflows/android_lib.merge_request.yml@v1
-    with:
-      java_version: '8'
\ No newline at end of file
+    uses: tinkoff-mobile-tech/workflows/.github/workflows/android_lib.merge_request.yml@v1
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index e73cc27..d457a34 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,10 +4,10 @@ buildscript {
 
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.6.4'
+        classpath 'com.android.tools.build:gradle:7.1.3'
     }
 }
 
@@ -15,7 +15,7 @@ allprojects {
     repositories {
         if (useMavenLocal) mavenLocal()
         google()
-        jcenter()
+        mavenCentral()
     }
 }
 
@@ -25,16 +25,16 @@ task clean(type: Delete) {
 
 ext {
     minSdk = 14
-    compileSdk = 28
-    targetSdk = 28
+    compileSdk = 31
+    targetSdk = 31
 
     isRelease = project.hasProperty('release')
     versionName = isRelease ? VERSION_NAME : "$VERSION_NAME-SNAPSHOT"
 
-    appCompatVersion = "1.2.0"
-    constraintLayoutVersion = "2.0.4"
+    appCompatVersion = "1.4.1"
+    constraintLayoutVersion = "2.1.4"
     viewPagerVersion = "1.0.0"
     viewPager2Version = "1.0.0"
     cardViewVersion = "1.0.0"
-    recyclerViewVersion = "1.1.0"
+    recyclerViewVersion = "1.2.1"
 }
diff --git a/changelog.md b/changelog.md
index 44b9300..11ea239 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,6 @@
+## 1.2.3
+- updated target sdk version to 31
+
 ## 1.2.2
 
 #### Fixes
diff --git a/demo/src/main/AndroidManifest.xml b/demo/src/main/AndroidManifest.xml
index 48f5417..6a55f40 100644
--- a/demo/src/main/AndroidManifest.xml
+++ b/demo/src/main/AndroidManifest.xml
@@ -13,7 +13,8 @@
         tools:ignore="GoogleAppIndexingWarning">
         <activity
             android:name="ru.tinkoff.scrollingpagerindicator.demo.MainActivity"
-            android:screenOrientation="portrait">
+            android:screenOrientation="portrait"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
diff --git a/gradle.properties b/gradle.properties
index 61c831e..04c5fd2 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -11,15 +11,14 @@
 # The setting is particularly useful for tweaking memory settings.
 org.gradle.jvmargs=-Xmx1536m
 
-android.useAndroidX=true
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
 android.useAndroidX=true
 
-VERSION_NAME=1.2.2
-VERSION_CODE=12
+VERSION_NAME=1.2.3
+VERSION_CODE=13
 GROUP=ru.tinkoff.scrollingpagerindicator
 
 POM_DESCRIPTION=Pager indicator inspired by Instagram. Lightweight and easy to set up.
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index b1b5947..2798e67 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
\ No newline at end of file
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
\ No newline at end of file