diff --git a/document-parser/requirements.txt b/document-parser/requirements.txt
index 92dcf4c..67cae25 100644
--- a/document-parser/requirements.txt
+++ b/document-parser/requirements.txt
@@ -6,3 +6,4 @@ pdf2image>=1.17.0,<2.0.0
 pillow>=10.0.0,<11.0.0
 aiosqlite>=0.20.0,<1.0.0
 httpx>=0.27.0,<1.0.0
+pypdfium2>=4.0.0,<5.0.0