diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c51a9c02..5228d6d8 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,7 +13,6 @@ jobs:
     strategy:
       matrix:
         java:
-          - 8
           - 11
           - 14
     # Job name
diff --git a/build.gradle b/build.gradle
index 678d8954..84977bae 100644
--- a/build.gradle
+++ b/build.gradle
@@ -71,8 +71,8 @@ ext {
     noticeFile = rootProject.file('NOTICE.txt')
 }
 
-sourceCompatibility = 1.8
-targetCompatibility = 1.8
+sourceCompatibility = JavaVersion.VERSION_11
+targetCompatibility = JavaVersion.VERSION_11
 
 allprojects {
     group 'org.opensearch'