diff --git a/requirements.txt b/requirements.txt
index cae1c86..efa4f44 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,4 +17,4 @@ typing_extensions==4.12.2
 Werkzeug==3.1.3
 gunicorn==20.1.0
 pdf2image==1.17.0
-python-pptx
\ No newline at end of file
+python-pptx==0.6.21
\ No newline at end of file