diff --git a/build.sbt b/build.sbt
index f06bce3bf..bfe2a4538 100644
--- a/build.sbt
+++ b/build.sbt
@@ -976,7 +976,7 @@ lazy val fluentd =
           exclude ("junit", "junit"),
         // Necessary for td-client-java, which is used in fluency-treasuredata
         "com.fasterxml.jackson.datatype" % "jackson-datatype-json-org" % "2.18.5" % Provided,
-        "com.fasterxml.jackson.datatype" % "jackson-datatype-jdk8"     % "2.18.5" % Provided,
+        "com.fasterxml.jackson.datatype" % "jackson-datatype-jdk8"     % "2.21.0" % Provided,
         // Redirecting slf4j log from Fluency to aiframe-log
         "org.slf4j" % "slf4j-jdk14" % SLF4J_VERSION
       )