diff --git a/pyproject.toml b/pyproject.toml
index c3cdd64..6e9cdc2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -125,7 +125,7 @@ optional = true
 
 [tool.poetry.group.docs.dependencies]
 sphinx = "7.3.7"
-pydata-sphinx-theme = "^0.14.0"
+pydata-sphinx-theme = ">=0.14,<0.16"
 sphinx-hoverxref = "^1.3.0"
 sphinx-notfound-page = "^1.0.0rc1"
 sphinx_copybutton = "0.5.2"