diff --git a/.github/prerelease_test.sh b/.github/prerelease_test.sh
index 5881cbe2..b9402405 100755
--- a/.github/prerelease_test.sh
+++ b/.github/prerelease_test.sh
@@ -6,9 +6,6 @@
 set -eu
 
 case ${ROS_DISTRO} in
-  melodic )
-    UBUNTU_DIST_TARGET=bionic
-    ;;
   noetic )
     UBUNTU_DIST_TARGET=focal
     ;;
diff --git a/.github/workflows/bloom-release.yml b/.github/workflows/bloom-release.yml
index 6299286f..dea9dc67 100644
--- a/.github/workflows/bloom-release.yml
+++ b/.github/workflows/bloom-release.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: bloom release
         id: bloom
         uses: at-wat/bloom-release-action@v0
diff --git a/.github/workflows/prerelease.yaml b/.github/workflows/prerelease.yaml
index 016234fd..c82bc561 100644
--- a/.github/workflows/prerelease.yaml
+++ b/.github/workflows/prerelease.yaml
@@ -18,7 +18,7 @@ jobs:
           - ROS_DISTRO=noetic
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install gh-pr-comment
         uses: at-wat/setup-gh-pr-comment@v0
       - name: Pre-release test
diff --git a/.github/workflows/release-candidate.yml b/.github/workflows/release-candidate.yml
index 286e468e..59b5e8ea 100644
--- a/.github/workflows/release-candidate.yml
+++ b/.github/workflows/release-candidate.yml
@@ -12,7 +12,7 @@ jobs:
     if: startsWith(github.event.issue.title, 'Release ')
     steps:
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: create release
         id: create_release
         uses: at-wat/catkin-release-action@v1
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 8d65cde5..6f75c2c1 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -20,7 +20,7 @@ jobs:
           - ROS_DISTRO=noetic
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Cache test data
         uses: actions/cache@v3