diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a336a78..fb691d7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,7 +25,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Validate Gradle Wrapper
         uses: gradle/wrapper-validation-action@v1
@@ -43,7 +43,7 @@ jobs:
 
       - name: (Fail-only) Upload build reports
         if: failure()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: reports
           path: |
diff --git a/CODEOWNERS b/CODEOWNERS
new file mode 100644
index 0000000..a3ce096
--- /dev/null
+++ b/CODEOWNERS
@@ -0,0 +1,3 @@
+# Comment line immediately above ownership line is reserved for related other information. Please be careful while editing.
+#ECCN:Open Source
+#GUSINFO:Open Source,Open Source Workflow