diff --git a/python/requirements-tests.txt b/python/requirements-tests.txt
index a2f7774e0..f7cf33216 100644
--- a/python/requirements-tests.txt
+++ b/python/requirements-tests.txt
@@ -1,7 +1,7 @@
 # We need black, build, and twine. We pin their versions, and
 # those of their dependencies.
 backports.tarfile==1.2.0
-black==24.10.0
+black==26.3.1
 build==1.2.2.post1
 certifi==2024.8.30
 cffi==1.17.1