diff --git a/.github/workflows/release-pdf-for-review.yml b/.github/workflows/release-pdf-for-review.yml
index ee8a30b..36c3de6 100644
--- a/.github/workflows/release-pdf-for-review.yml
+++ b/.github/workflows/release-pdf-for-review.yml
@@ -15,7 +15,7 @@ jobs:
         with:
           root_file: main.tex
       - name: Upload PDF file
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: undergraduate-thesis-for-review
           path: main.pdf
diff --git a/main.tex b/main.tex
index 0156487..cd57287 100644
--- a/main.tex
+++ b/main.tex
@@ -21,6 +21,7 @@
 \maketitle
 
 \begin{abstract}
+	Hello world!
 	This meta-paper describes the style to be used in articles and short papers
 	for SBC conferences. For papers in English, you should add just an abstract
 	while for the papers in Portuguese, we also ask for an abstract in