diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1eb5d9e..9f65df1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -39,7 +39,7 @@ jobs:
 
       # 生成したPDFをGitHub Actionsにアップロードする
       - name: Upload artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: pdf
           # アップロードするファイルを変更する場合、以下を変える
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 22ab207..d7bb16f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,7 +19,7 @@ jobs:
         run: latexmk -pdf -e '$pdf_mode=4' main.tex
 
       - name: Upload PDF
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: main-lua.pdf
           path: main.pdf
@@ -28,7 +28,7 @@ jobs:
         run: latexmk -pdf -e '$pdf_mode=3' main.tex
 
       - name: Upload PDF
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: main-up.pdf
           path: main.pdf