diff --git a/setup.cfg b/setup.cfg
index 09edf2a4f..2b7798ba4 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -44,7 +44,7 @@ install_requires =
     astor; python_version < "3.9"
     attrs
     docutils>=0.17
-    lunr==0.6.2
+    lunr=>0.6.2<=0.8.8
     configargparse
     toml
     importlib_metadata; python_version < "3.8"