1 files changed, 4 insertions, 0 deletions
diff --git a/sphinx/errors.py b/sphinx/errors.py
index 6e8c4e1c6..b614d9ab0 100644
--- a/sphinx/errors.py
+++ b/sphinx/errors.py
@@ -52,6 +52,10 @@ class ThemeError(SphinxError):
     category = 'Theme error'
 
 
+class VersionRequirementError(SphinxError):
+    category = 'Sphinx version error'
+
+
 class PycodeError(Exception):
     def __str__(self):
         res = self.args[0]