diff --git a/Dockerfile_app b/Dockerfile_app
index aa97830..7bda5bc 100644
--- a/Dockerfile_app
+++ b/Dockerfile_app
@@ -1,4 +1,4 @@
-FROM openjdk:8-jdk-alpine
+FROM openjdk:13-jdk-alpine
 
 RUN apk add libpcap npm
 
diff --git a/build.gradle b/build.gradle
index 999d629..17babb3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,13 +1,15 @@
 plugins {
-    id 'org.springframework.boot' version '2.1.4.RELEASE'
+    id 'org.springframework.boot' version '2.2.5.RELEASE'
     id 'java'
 }
 
 apply plugin: 'io.spring.dependency-management'
 
 group = 'ru.serega6531'
-version = '0.0.1-SNAPSHOT'
-sourceCompatibility = '1.8'
+version = '1.0-SNAPSHOT'
+
+sourceCompatibility = JavaVersion.VERSION_13
+targetCompatibility = JavaVersion.VERSION_13
 
 configurations {
     compileOnly {
@@ -25,7 +27,7 @@ dependencies {
     implementation "org.springframework.boot:spring-boot-starter-security"
     implementation "org.springframework.boot:spring-boot-starter-websocket"
     implementation 'org.springframework.session:spring-session-core'
-    compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.7'
+    compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.9'
     compile group: 'commons-io', name: 'commons-io', version: '2.6'
     compile 'org.pcap4j:pcap4j-core:1.8.2'
     compile 'org.pcap4j:pcap4j-packetfactory-static:1.8.2'
@@ -34,5 +36,5 @@ dependencies {
     runtimeOnly 'org.springframework.boot:spring-boot-devtools'
     runtimeOnly 'org.postgresql:postgresql'
     annotationProcessor 'org.projectlombok:lombok'
-    testCompile 'org.junit.jupiter:junit-jupiter:5.4.2'
+    testCompile 'org.junit.jupiter:junit-jupiter:5.6.0'
 }
diff --git a/docker-compose.yml b/docker-compose.yml
index 5bb1a66..972cadc 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -18,7 +18,7 @@ services:
     network_mode: "host"
     image: packmate-app:v1
     command: [
-      "/usr/bin/java", "-Djava.net.preferIPv4Stack=true", "-Djava.net.preferIPv4Addresses=true",
+      "java", "-Djava.net.preferIPv4Stack=true", "-Djava.net.preferIPv4Addresses=true",
       "-jar", "/app/app.jar", "--spring.datasource.url=jdbc:postgresql://127.0.0.1:65001/$${DB_NAME}",
       "--spring.datasource.username=$${DB_USER}", "--spring.datasource.password=$${DB_PASSWORD}",
       "--interface-name=$${INTERFACE}", "--local-ip=$${LOCAL_IP}", "--account-login=$${WEB_LOGIN}",
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 44e7c4d..a2bf131 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.2.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.2.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/src/main/java/ru/serega6531/packmate/service/StreamSubscriptionService.java b/src/main/java/ru/serega6531/packmate/service/StreamSubscriptionService.java
index e661476..0890081 100644
--- a/src/main/java/ru/serega6531/packmate/service/StreamSubscriptionService.java
+++ b/src/main/java/ru/serega6531/packmate/service/StreamSubscriptionService.java
@@ -12,13 +12,14 @@ import ru.serega6531.packmate.model.pojo.SubscriptionMessage;
 
 import java.io.IOException;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 @Service
 @Slf4j
 public class StreamSubscriptionService {
 
-    private List<WebSocketSession> subscribers = new ArrayList<>();
+    private List<WebSocketSession> subscribers = Collections.synchronizedList(new ArrayList<>());
 
     private final ObjectMapper mapper;
 
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index ecac0e0..3b39146 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -11,6 +11,7 @@ spring:
       hibernate:
         temp:
           use_jdbc_metadata_defaults: false
+    database-platform: org.hibernate.dialect.PostgreSQLDialect
 
 
 enable-capture: true