diff --git a/requirements.txt b/requirements.txt
index 3faade6..335da51 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 PyPDF3
 appdirs
-mechanize
\ No newline at end of file
+mechanize
+python-dateutil
\ No newline at end of file