diff --git a/requirements-testing.txt b/requirements-testing.txt
index 97116eb..c9a7911 100644
--- a/requirements-testing.txt
+++ b/requirements-testing.txt
@@ -4,6 +4,6 @@ pytest-cov == 7.1.*
 pytest-timeout == 2.4.*
 pytest-xdist == 3.8.*
 types-PyYAML == 6.*
-black == 25.*
+black == 26.*
 mypy == 1.19.*
 ruff == 0.15.*