diff --git a/pyproject.toml b/pyproject.toml
index 55a2847..4eb4696 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ classifiers = [
     "Topic :: Documentation :: Sphinx",
 ]
 dependencies = [
-    "pydata-sphinx-theme>=0.13.1",
+    "pydata-sphinx-theme==0.13.3",
     "matplotlib",
 ]