diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index a959a5b6..bb57a93c 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -21,7 +21,7 @@ jobs:
     needs: Get-CI-Image-Tag
     strategy:
       matrix:
-        java: [11, 17, 21]
+        java: [21]
 
     name: Build and Test geospatial Plugin
     runs-on: ubuntu-latest
@@ -54,7 +54,7 @@ jobs:
   Build-windows-macos:
     strategy:
       matrix:
-        java: [11, 17, 21]
+        java: [21]
         os: [windows-latest, macos-latest]
 
     name: Build and Test geospatial Plugin
diff --git a/.github/workflows/maven-publish.yml b/.github/workflows/maven-publish.yml
index 724e3a21..644342c7 100644
--- a/.github/workflows/maven-publish.yml
+++ b/.github/workflows/maven-publish.yml
@@ -20,7 +20,7 @@ jobs:
       - uses: actions/setup-java@v3
         with:
           distribution: temurin # Temurin is a distribution of adoptium
-          java-version: 11
+          java-version: 21
       - uses: actions/checkout@v3
       - uses: aws-actions/configure-aws-credentials@v1
         with:
diff --git a/build.gradle b/build.gradle
index 8a08474d..d76333f3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -94,8 +94,8 @@ ext {
 allprojects {
     group = opensearch_group
     version = "${opensearch_build}"
-    targetCompatibility = JavaVersion.VERSION_11
-    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_21
+    sourceCompatibility = JavaVersion.VERSION_21
 }
 
 repositories {