diff --git a/.github/workflows/apt.yml b/.github/workflows/apt.yml
index 20bb244a5..48d322253 100644
--- a/.github/workflows/apt.yml
+++ b/.github/workflows/apt.yml
@@ -213,6 +213,7 @@ jobs:
           - "install-newly.sh local"
           - "install-newly.sh v5"
           - "install-newly.sh lts"
+          - "tmpfiles.sh"
         include:
           - label: Debian bullseye amd64
             rake-job: debian-bullseye
diff --git a/.github/workflows/yum.yml b/.github/workflows/yum.yml
index 0b94691e1..e0deb989d 100644
--- a/.github/workflows/yum.yml
+++ b/.github/workflows/yum.yml
@@ -226,6 +226,7 @@ jobs:
           - "install-newly.sh local"
           - "install-newly.sh v5"
           - "install-newly.sh lts"
+          - "tmpfiles.sh"
         include:
           - label: RockyLinux 8 x86_64
             rake-job: rockylinux-8
diff --git a/fluent-package/apt/systemd-test/tmpfiles.sh b/fluent-package/apt/systemd-test/tmpfiles.sh
new file mode 100755
index 000000000..2784a7200
--- /dev/null
+++ b/fluent-package/apt/systemd-test/tmpfiles.sh
@@ -0,0 +1,33 @@
+#!/bin/bash
+
+set -exu
+
+. $(dirname $0)/../commonvar.sh
+
+# Display unit info for debug
+sudo systemctl cat systemd-tmpfiles-clean.service
+sudo systemctl cat systemd-tmpfiles-clean.timer
+
+# Install the built package
+sudo apt install -V -y \
+    /host/${distribution}/pool/${code_name}/${channel}/*/*/fluent-package_*_${architecture}.deb
+
+# Wait all processes to start
+systemctl status --no-pager fluentd
+sleep 3
+
+# Test: the files under /tmp/ exist and not be cleaned up by default
+ls -d /tmp/fluent
+ls -d /tmp/fluentd-lock-*
+sudo systemd-tmpfiles --clean
+ls -d /tmp/fluent
+ls -d /tmp/fluentd-lock-*
+
+# Make timestamps old
+touch -d "2 months ago" /tmp/fluentd
+touch -d "2 months ago" /tmp/fluentd-lock-*
+
+# Test: the files under /tmp/ not be cleaned up even if they are old
+sudo systemd-tmpfiles --clean
+ls -d /tmp/fluent
+ls -d /tmp/fluentd-lock-*
diff --git a/fluent-package/templates/usr/lib/tmpfiles.d/fluentd.conf b/fluent-package/templates/usr/lib/tmpfiles.d/fluentd.conf
index 016b56a18..2c3b2906a 100644
--- a/fluent-package/templates/usr/lib/tmpfiles.d/fluentd.conf
+++ b/fluent-package/templates/usr/lib/tmpfiles.d/fluentd.conf
@@ -19,3 +19,4 @@ d /var/run/<%= package_dir %> 0755 <%= service_name %> <%= service_name %> - -
 
 # Exclude <%= service_name %>
 x /tmp/<%= package_dir %>
+X /tmp/fluentd-lock-*
diff --git a/fluent-package/yum/systemd-test/tmpfiles.sh b/fluent-package/yum/systemd-test/tmpfiles.sh
new file mode 100755
index 000000000..1ec79d268
--- /dev/null
+++ b/fluent-package/yum/systemd-test/tmpfiles.sh
@@ -0,0 +1,35 @@
+#!/bin/bash
+
+set -exu
+
+. $(dirname $0)/commonvar.sh
+
+# Display unit info for debug
+sudo systemctl cat systemd-tmpfiles-clean.service
+sudo systemctl cat systemd-tmpfiles-clean.timer
+
+# Install the built package
+sudo $DNF install -y \
+    /host/${distribution}/${DISTRIBUTION_VERSION}/x86_64/Packages/fluent-package-[0-9]*.rpm
+
+# Wait all processes to start
+(! systemctl status --no-pager fluentd)
+sudo systemctl enable --now fluentd
+systemctl status --no-pager fluentd
+sleep 3
+
+# Test: the files under /tmp/ exist and not be cleaned up by default
+ls -d /tmp/fluent
+ls -d /tmp/fluentd-lock-*
+sudo systemd-tmpfiles --clean
+ls -d /tmp/fluent
+ls -d /tmp/fluentd-lock-*
+
+# Make timestamps old
+touch -d "2 months ago" /tmp/fluentd
+touch -d "2 months ago" /tmp/fluentd-lock-*
+
+# Test: the files under /tmp/ not be cleaned up even if they are old
+sudo systemd-tmpfiles --clean
+ls -d /tmp/fluent
+ls -d /tmp/fluentd-lock-*