diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 869af67a..03252cb4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -55,7 +55,7 @@ jobs:
           ANNOTATE_MISSING_LINES: true
 
       - name: Store Pull Request comment to be posted
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: steps.coverage_comment.outputs.COMMENT_FILE_WRITTEN == 'true'
         with:
           name: python-coverage-comment-action
diff --git a/README.md b/README.md
index dca3baa2..8ce39c24 100644
--- a/README.md
+++ b/README.md
@@ -115,7 +115,7 @@ jobs:
           GITHUB_TOKEN: ${{ github.token }}
 
       - name: Store Pull Request comment to be posted
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: steps.coverage_comment.outputs.COMMENT_FILE_WRITTEN == 'true'
         with:
           # If you use a different name, update COMMENT_ARTIFACT_NAME accordingly
@@ -252,9 +252,9 @@ jobs:
           # directly or through PYTEST_ADD_OPTS.
 
       - name: Store coverage file
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
-          name: coverage
+          name: coverage-${{ matrix.python_version }}
           path: .coverage.${{ matrix.python_version }}
 
   coverage:
@@ -267,10 +267,11 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: actions/download-artifact@v3
+      - uses: actions/download-artifact@v4
         id: download
         with:
-          name: "coverage"
+          pattern: coverage-*
+          merge-multiple: true
 
       - name: Coverage comment
         id: coverage_comment
@@ -280,7 +281,7 @@ jobs:
           MERGE_COVERAGE_FILES: true
 
       - name: Store Pull Request comment to be posted
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: steps.coverage_comment.outputs.COMMENT_FILE_WRITTEN == 'true'
         with:
           name: python-coverage-comment-action
@@ -454,7 +455,7 @@ jobs:
           GITHUB_TOKEN: ${{ github.token }}
 
       - name: Store Pull Request comment to be posted
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: steps.coverage_comment_1.outputs.COMMENT_FILE_WRITTEN == 'true' || steps.coverage_comment_2.outputs.COMMENT_FILE_WRITTEN == 'true'
         with:
           name: python-coverage-comment-action
diff --git a/tests/end_to_end/repo/.github/workflows/ci.yml b/tests/end_to_end/repo/.github/workflows/ci.yml
index 90c52f5b..1e381023 100644
--- a/tests/end_to_end/repo/.github/workflows/ci.yml
+++ b/tests/end_to_end/repo/.github/workflows/ci.yml
@@ -44,7 +44,7 @@ jobs:
           SUBPROJECT_ID: __ACTION_SUBPROJECT_ID__
 
       - name: Store Pull Request comment to be posted
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: steps.coverage_comment.outputs.COMMENT_FILE_WRITTEN == 'true'
         with:
           name: python-coverage-comment-action