diff --git a/.github/workflows/maven-publish.yml b/.github/workflows/maven-publish.yml
index 75f22834a..e822e15cb 100644
--- a/.github/workflows/maven-publish.yml
+++ b/.github/workflows/maven-publish.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        jdk: [17]
+        jdk: [21]
         platform: ["ubuntu-latest"]
     if: github.repository == 'opensearch-project/alerting'
     runs-on: ${{ matrix.platform }}
diff --git a/.github/workflows/multi-node-test-workflow.yml b/.github/workflows/multi-node-test-workflow.yml
index 7944f43db..fa74c70d8 100644
--- a/.github/workflows/multi-node-test-workflow.yml
+++ b/.github/workflows/multi-node-test-workflow.yml
@@ -20,7 +20,7 @@ jobs:
     needs: Get-CI-Image-Tag
     strategy:
       matrix:
-        java: [ 11, 17 ]
+        java: [ 21, 23 ]
     # Job name
     name: Build and test Alerting
     # This job runs on Linux
diff --git a/.github/workflows/security-test-workflow.yml b/.github/workflows/security-test-workflow.yml
index 5ca093c4e..31f7ba9ff 100644
--- a/.github/workflows/security-test-workflow.yml
+++ b/.github/workflows/security-test-workflow.yml
@@ -12,7 +12,7 @@ jobs:
   build:
     strategy:
       matrix:
-        java: [ 11, 17, 21 ]
+        java: [ 21, 23 ]
     # Job name
     name: Build and test Alerting
     # This job runs on Linux
diff --git a/.github/workflows/test-workflow.yml b/.github/workflows/test-workflow.yml
index 626c44565..e539d04f9 100644
--- a/.github/workflows/test-workflow.yml
+++ b/.github/workflows/test-workflow.yml
@@ -23,7 +23,7 @@ jobs:
       WORKING_DIR: ${{ matrix.working_directory }}.
     strategy:
       matrix:
-        java: [11, 17, 21]
+        java: [21, 23]
     # Job name
     name: Build Alerting with JDK ${{ matrix.java }} on Linux
     # This job runs on Linux
@@ -71,7 +71,7 @@ jobs:
       WORKING_DIR: ${{ matrix.working_directory }}.
     strategy:
       matrix:
-        java: [11, 17, 21]
+        java: [21, 23]
         os: [ windows-latest, macos-latest ]
         include:
           - os: windows-latest
diff --git a/build.gradle b/build.gradle
index 54c316d5c..52a8b5e94 100644
--- a/build.gradle
+++ b/build.gradle
@@ -23,7 +23,7 @@ buildscript {
         }
         opensearch_no_snapshot = opensearch_version.replace("-SNAPSHOT","")
         common_utils_version = System.getProperty("common_utils.version", opensearch_build)
-        kotlin_version = '1.8.21'
+        kotlin_version = '1.9.25'
     }
 
     repositories {
@@ -86,11 +86,12 @@ allprojects {
 
     apply from: "$rootDir/build-tools/repositories.gradle"
 
-    plugins.withId('java') {
-        sourceCompatibility = targetCompatibility = JavaVersion.VERSION_11
+    tasks.withType(JavaCompile) {
+        sourceCompatibility = JavaVersion.VERSION_21
+        targetCompatibility = JavaVersion.VERSION_21
     }
     plugins.withId('org.jetbrains.kotlin.jvm') {
-        compileKotlin.kotlinOptions.jvmTarget = compileTestKotlin.kotlinOptions.jvmTarget = JavaVersion.VERSION_11
+        compileKotlin.kotlinOptions.jvmTarget = compileTestKotlin.kotlinOptions.jvmTarget = JavaVersion.VERSION_21
         compileKotlin.dependsOn ktlint
     }
     tasks.withType(AbstractArchiveTask).configureEach {
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index d64cd4917..a4b76b953 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 3499ded5c..df97d72b8 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10.2-bin.zip
 networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
index 1aa94a426..f5feea6d6 100755
--- a/gradlew
+++ b/gradlew
@@ -15,6 +15,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 
 ##############################################################################
 #
@@ -55,7 +57,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -84,7 +86,8 @@ done
 # shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
 # Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
-APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s
+' "$PWD" ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
diff --git a/gradlew.bat b/gradlew.bat
index 6689b85be..9b42019c7 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -13,6 +13,8 @@
 @rem See the License for the specific language governing permissions and
 @rem limitations under the License.
 @rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
 
 @if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
@@ -43,11 +45,11 @@ set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
 if %ERRORLEVEL% equ 0 goto execute
 
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
 
 goto fail
 
@@ -57,11 +59,11 @@ set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 
 if exist "%JAVA_EXE%" goto execute
 
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
 
 goto fail