diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index fc0fe06..f4c761f 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -54,7 +54,7 @@ repos:
         args: [--filter-files, --skip=./lib/ncdata/__init__.py]
 
 -   repo: https://github.com/asottile/blacken-docs
-    rev: 1.19.1
+    rev: 1.20.0
     hooks:
     -   id: blacken-docs
         types: [file, rst]