diff --git a/bookwyrm/templates/book/publisher_info.html b/bookwyrm/templates/book/publisher_info.html
index 26d8e43fd..a69b7d86f 100644
--- a/bookwyrm/templates/book/publisher_info.html
+++ b/bookwyrm/templates/book/publisher_info.html
@@ -1,7 +1,7 @@
 {% spaceless %}
 
 {% load i18n %}
-{% load sealed_dates %}
+{% load date_ext %}
 
 {% firstof book.physical_format_detail book.get_physical_format_display as format %}
 {% firstof book.physical_format book.physical_format_detail as format_property %}
diff --git a/bookwyrm/templatetags/sealed_dates.py b/bookwyrm/templatetags/date_ext.py
similarity index 93%
rename from bookwyrm/templatetags/sealed_dates.py
rename to bookwyrm/templatetags/date_ext.py
index f0b0f7d25..4167893c8 100644
--- a/bookwyrm/templatetags/sealed_dates.py
+++ b/bookwyrm/templatetags/date_ext.py
@@ -1,4 +1,4 @@
-""" formatting of SealedDate instances """
+""" additional formatting of dates """
 from django import template
 from django.template import defaultfilters
 from django.contrib.humanize.templatetags.humanize import naturalday