diff --git a/.github/workflows/backward_compatibility.yml b/.github/workflows/backward_compatibility.yml
index 6a42492..f38fe58 100644
--- a/.github/workflows/backward_compatibility.yml
+++ b/.github/workflows/backward_compatibility.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: setup
       run: |
          command="sudo apt-get -y update && \
diff --git a/.github/workflows/heat_transfer_ci.yml b/.github/workflows/heat_transfer_ci.yml
index 2fc6554..f828062 100644
--- a/.github/workflows/heat_transfer_ci.yml
+++ b/.github/workflows/heat_transfer_ci.yml
@@ -15,7 +15,7 @@ jobs:
     timeout-minutes: 30
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: run test
 
       run: |
diff --git a/.github/workflows/indent.yml b/.github/workflows/indent.yml
index b4c7b7c..1dfb3ed 100644
--- a/.github/workflows/indent.yml
+++ b/.github/workflows/indent.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: DoozyX/clang-format-lint-action@v0.16
       with:
         source: '.'
diff --git a/.github/workflows/solid_mechanics_ci.yml b/.github/workflows/solid_mechanics_ci.yml
index 9efc91f..d4ddd67 100644
--- a/.github/workflows/solid_mechanics_ci.yml
+++ b/.github/workflows/solid_mechanics_ci.yml
@@ -15,7 +15,7 @@ jobs:
     timeout-minutes: 60
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: run test
 
       run: |