diff --git a/src/trove_classifiers/__init__.py b/src/trove_classifiers/__init__.py
index 8467c86..0bd4d93 100644
--- a/src/trove_classifiers/__init__.py
+++ b/src/trove_classifiers/__init__.py
@@ -208,6 +208,7 @@
     "Framework :: Scrapy",
     "Framework :: Setuptools Plugin",
     "Framework :: Sphinx",
+    "Framework :: Sphinx :: Domain",
     "Framework :: Sphinx :: Extension",
     "Framework :: Sphinx :: Theme",
     "Framework :: Trac",