diff --git a/containers/fluent-bit/Dockerfile b/containers/fluent-bit/Dockerfile
index 17e6547de..a0d8cc96b 100644
--- a/containers/fluent-bit/Dockerfile
+++ b/containers/fluent-bit/Dockerfile
@@ -3,7 +3,7 @@
 # Stage1: build from source
 FROM ghcr.io/cybozu/ubuntu-dev:22.04 AS builder
 
-ARG FLUENT_BIT_VERSION=2.2.0
+ARG FLUENT_BIT_VERSION=3.0.2
 
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
diff --git a/containers/fluent-bit/TAG b/containers/fluent-bit/TAG
index 9d6563e2d..9e20d2046 100644
--- a/containers/fluent-bit/TAG
+++ b/containers/fluent-bit/TAG
@@ -1 +1 @@
-2.2.0.1
+3.0.2.1