diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2d18cf2..ba3b904 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         java-version:
-          - 8
+          - 11
           - 17
     runs-on: ubuntu-latest
     name: 'Test (JDK ${{ matrix.java-version }})'
diff --git a/build.gradle.kts b/build.gradle.kts
index 52aeb37..1d69a4d 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,9 +1,9 @@
 plugins {
     id("java")
     id("application")
-    id("com.github.johnrengelman.shadow") version "7.1.2"
+    id("com.github.johnrengelman.shadow") version "8.1.1"
     id("checkstyle")
-    id("com.github.vlsi.gradle-extensions") version "1.84"
+    id("com.github.vlsi.gradle-extensions") version "1.90"
 }
 
 group = "com.github.vlsi.ksar"
@@ -17,8 +17,8 @@ println("Building kSar $version")
 setProperty("archivesBaseName", "ksar")
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_1_8
-    targetCompatibility = JavaVersion.VERSION_1_8
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
 }
 
 application {
@@ -31,8 +31,8 @@ repositories {
 
 dependencies {
     implementation("org.slf4j:slf4j-api:2.0.6")
-    implementation("ch.qos.logback:logback-core:1.3.5")
-    implementation("ch.qos.logback:logback-classic:1.3.5")
+    implementation("ch.qos.logback:logback-core:1.3.7")
+    implementation("ch.qos.logback:logback-classic:1.3.7")
 
     implementation("com.itextpdf:itextpdf:5.5.13.3")
     implementation("com.jcraft:jsch:0.1.55")
diff --git a/gradle.properties b/gradle.properties
index ccb0670..85f16de 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,6 +1,6 @@
 #
-# Copyright 2018 The kSAR Project. All rights reserved.
+# Copyright 2018-2023 The kSAR Project. All rights reserved.
 # See the LICENSE file in the project root for more information.
 #
 
-version = 5.2.5
+version = 6.0.0
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index acf0535..409be89 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -2,5 +2,5 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionSha256Sum=7ba68c54029790ab444b39d7e293d3236b2632631fb5f2e012bb28b4ff669e4b
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
+distributionSha256Sum=03ec176d388f2aa99defcadc3ac6adf8dd2bce5145a129659537c0874dea5ad1
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.2.1-bin.zip