diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 1eb084944d86e..5a55f1c44ed4e 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -3,7 +3,7 @@ opensearch        = "2.19.0"
 lucene            = "9.12.0"
 
 bundled_jdk_vendor = "adoptium"
-bundled_jdk = "23.0.1+11"
+bundled_jdk = "21.0.5+11"
 
 # optional dependencies
 spatial4j         = "0.7"