diff --git a/pyproject.toml b/pyproject.toml
index 53528b1..7a26e21 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,7 @@ dependencies = [
 [project.optional-dependencies]
 docs = [
     "myst-nb~=1.2",
-    "pydata-sphinx-theme~=0.18.0",
+    "pydata-sphinx-theme~=0.19.0",
     "sphinx~=8.1",
 ]
 graph = [