diff --git a/pyproject.toml b/pyproject.toml
index 4f1fd6c9..9ad17bdb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ dev = [
 ]
 docs = [
     "mkdocstrings[python]~=1.0.2",
-    "zensical==0.0.39",
+    "zensical==0.0.40",
 ]
 lint = [
     "ruff>=0.15.0",
diff --git a/requirements/docs.requirements.txt b/requirements/docs.requirements.txt
index 37dbc6fd..2788728f 100644
--- a/requirements/docs.requirements.txt
+++ b/requirements/docs.requirements.txt
@@ -14,6 +14,7 @@ jinja2==3.1.6
     # via
     #   mkdocs
     #   mkdocstrings
+    #   zensical
 markdown==3.10.2
     # via
     #   mkdocs
@@ -76,5 +77,5 @@ tomli==2.4.1
     # via zensical
 watchdog==6.0.0
     # via mkdocs
-zensical==0.0.39
+zensical==0.0.40
     # via python-backoff (pyproject.toml:docs)