diff --git a/pyproject.toml b/pyproject.toml
index 4a595754..7bc3ae57 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,7 @@ doc = [
     "rstcheck[sphinx,toml]>=5.0,<6.3",
     "sphinx>=4,!=5.1.0,<8.2.4",
     "sphinx-autoapi>=1.8,<3.9",
-    "sphinx-issues>=1.2,<5.1",
+    "sphinx-issues>=1.2,<6.1",
     "sphinx-autodoc-typehints>1.19,<3.2.0",
     "sphinxcontrib-mermaid>0.7,<2.1.0",
 ]