diff --git a/pyproject.toml b/pyproject.toml
index b8b23174..deff67cb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -70,7 +70,7 @@ lefthook = ">=1.13.1,<2"
 ruff = ">=0.12.12,<0.13"
 typos = ">=1.36.2,<2"
 actionlint = ">=1.7.7,<2"
-blacken-docs = ">=1.19.1,<2"
+blacken-docs = ">=1.20.0,<2"
 pytest = ">=8.4.2,<9"
 validate-pyproject = ">=0.24.1,<0.25"
 # NOTE: don't add cupy, jax, pytorch, or sparse here,