diff --git a/pyproject.toml b/pyproject.toml
index dced1dbe3..6295db9bb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ dependencies=[
    'pytest',
 
     # required for running 'buildtest stylecheck'
-   'black==24.3.0',
+   'black==26.3.1',
    'pyflakes',
    'isort',
    'archspec',
diff --git a/requirements.txt b/requirements.txt
index 84f9bf208..f1902cbe4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ rich
 coverage
 pytest
 isort
-black==24.3.0
+black==26.3.1
 pyflakes
 # https://urllib3.readthedocs.io/en/latest/v2-migration-guide.html
 urllib3>=2.1.0