diff --git a/retriever/forms.py b/retriever/forms.py
index 94fcef6..44e4a45 100644
--- a/retriever/forms.py
+++ b/retriever/forms.py
@@ -12,4 +12,4 @@ class SpaceSeparatedField(forms.CharField):
 
 class UploadForm(forms.Form):
     attachments = MultiFileField(min_num=1, max_num=10, max_file_size=1024 * 1024 * 64,
-                                 attrs={'class': 'file-input is-primary'})
+                                 attrs={'class': 'file-input is-primary', 'accept': '.docx, .doc, .dot, .pptx, .ppt, .pdf, .xls'})