diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 8f41dc4..7478639 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -2,7 +2,7 @@
 # See https://pre-commit.com/hooks.html for more hooks
 repos:
 -   repo: https://github.com/psf/black
-    rev: 20.8b1
+    rev: 22.3.0
     hooks:
     -   id: black
 -   repo: https://github.com/pre-commit/mirrors-isort
diff --git a/setup.cfg b/setup.cfg
index 6ebd622..3b92c76 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -16,7 +16,7 @@ classifiers =
 [options]
 install_requires =
     fsspec>=2021.8.1
-    asyncssh>=2.7.1,<3
+    asyncssh>=2.11.0,<3
 packages = find:
 
 [options.extras_require]
diff --git a/sshfs/utils.py b/sshfs/utils.py
index 47b0c77..fb2b02d 100644
--- a/sshfs/utils.py
+++ b/sshfs/utils.py
@@ -11,7 +11,7 @@
 _FILE_EXISTS = os.strerror(errno.EEXIST)
 
 # A copy of SFTP_BLOCK_SIZE (16KB)
-BASE_BLOCK_SIZE = 2 ** 14
+BASE_BLOCK_SIZE = 2**14
 
 # Most of the SFTP implementations support reading a 64kb
 # and writing a 256kb chunk at a single request. We'll set