diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 039ed26..2b43f25 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -17,7 +17,7 @@ repos:
       - id: trailing-whitespace
 
   - repo: https://github.com/adamchainz/blacken-docs
-    rev: "1.19.1"
+    rev: "1.20.0"
     hooks:
     -   id: blacken-docs
         additional_dependencies: