diff --git a/pyproject.toml b/pyproject.toml
index d5269070..36aefae9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -85,7 +85,7 @@ docs = [
     "pydata-sphinx-theme",
     "sphinx!=7.2.0,<9.0.0",
     "sphinx-design<0.7.0",
-    "sphinx-issues<5.0.0",
+    "sphinx-issues<6.0.0",
     "sphinx-gallery<0.19.0",
     "sphinx-panels",
     "tabulate",