diff --git a/lektor_inlinetags.py b/lektor_inlinetags.py
index c30f050..84a84dc 100644
--- a/lektor_inlinetags.py
+++ b/lektor_inlinetags.py
@@ -1,11 +1,11 @@
 # -*- coding: utf-8 -*-
 from lektor.context import get_ctx
 from lektor.markdown import Markup
-from lektor.pluginsystem import Plugin
+from lektor.pluginsystem import Plugin  # subclass
 from lektor.sourceobj import VirtualSourceObject as VObj
 import re
 from typing import Set, Dict, Iterator, Generator
-from lektor_groupby import report_config_error
+from lektor_groupby.util import report_config_error
 
 
 class InlineTagsPlugin(Plugin):
@@ -14,7 +14,7 @@ class InlineTagsPlugin(Plugin):
 
     def on_setup_env(self, **extra) -> None:
         def _get_tags(record, *, recursive=False) -> Iterator[VObj]:
-            fn = self.env.jinja_env.filters['groupby']
+            fn = self.env.jinja_env.filters['vgroups']
             yield from fn(record, *self.config_keys, recursive=recursive)
 
         self.env.jinja_env.filters.update(inlinetags=_get_tags)
diff --git a/setup.py b/setup.py
index eb0ce30..ebb76f0 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@ with open('README.md') as fp:
 setup(
     name='lektor-inlinetags',
     py_modules=['lektor_inlinetags'],
-    install_requires=['lektor-groupby>=0.9.1'],
+    install_requires=['lektor-groupby>=0.9.4'],
     entry_points={
         'lektor.plugins': [
             'inlinetags = lektor_inlinetags:InlineTagsPlugin',