diff --git a/.github/workflows/apt.yml b/.github/workflows/apt.yml
index c0d2b94ed..3f320f969 100644
--- a/.github/workflows/apt.yml
+++ b/.github/workflows/apt.yml
@@ -235,8 +235,7 @@ jobs:
           - "downgrade-to-v4.sh"
           - "downgrade-to-v5-lts.sh"
           - "install-newly.sh local"
-          - "install-newly.sh v5"
-          #- "install-newly.sh v6"
+          - "install-newly.sh v6"
           - "install-newly.sh lts"
           - "update-to-next-version.sh"
           - "update-to-next-version-with-backward-compat-for-v4.sh"
diff --git a/fluent-package/apt/systemd-test/install-newly.sh b/fluent-package/apt/systemd-test/install-newly.sh
index 86586a018..a5871ede5 100755
--- a/fluent-package/apt/systemd-test/install-newly.sh
+++ b/fluent-package/apt/systemd-test/install-newly.sh
@@ -9,14 +9,11 @@ case $1 in
     sudo apt install -V -y \
       /host/${distribution}/pool/${code_name}/${channel}/*/*/fluent-package_*_${architecture}.deb
     ;;
-  v5)
-    curl --fail --silent --show-error --location https://toolbelt.treasuredata.com/sh/install-${distribution}-${code_name}-fluent-package5.sh | sh
-    ;;
   v6)
-    curl --fail --silent --show-error --location https://toolbelt.treasuredata.com/sh/install-${distribution}-${code_name}-fluent-package6.sh | sh
+    curl --fail --silent --show-error --location https://fluentd.cdn.cncf.io/sh/install-${distribution}-${code_name}-fluent-package6.sh | sh
     ;;
   lts)
-    curl --fail --silent --show-error --location https://toolbelt.treasuredata.com/sh/install-${distribution}-${code_name}-fluent-package5-lts.sh | sh
+    curl --fail --silent --show-error --location https://fluentd.cdn.cncf.io/sh/install-${distribution}-${code_name}-fluent-package6-lts.sh | sh
     ;;
 esac