diff --git a/pyproject.toml b/pyproject.toml
index 82d37ce..75a1a6b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,8 +45,8 @@ dev = [
     { include-group = "typing" },
 ]
 docs = [
-    "mkdocstrings[python]>=0.22.0",
-    "zensical>=0.0.2",
+    "mkdocstrings[python]==0.22.0",
+    "zensical==0.0.15",
 ]
 lint = [
     "ruff>=0.12.9",