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-rw-r--r--sphinx/domains/cpp.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/sphinx/domains/cpp.py b/sphinx/domains/cpp.py
index 5e239a2d9..311885e5d 100644
--- a/sphinx/domains/cpp.py
+++ b/sphinx/domains/cpp.py
@@ -8033,7 +8033,7 @@ def setup(app: Sphinx) -> Dict[str, Any]:
return {
'version': 'builtin',
- 'env_version': 4,
+ 'env_version': 5,
'parallel_read_safe': True,
'parallel_write_safe': True,
}