diff --git a/setup.cfg b/.flake8
similarity index 66%
rename from setup.cfg
rename to .flake8
index 2fc6cdf0..5ea9b0fe 100644
--- a/setup.cfg
+++ b/.flake8
@@ -1,4 +1,4 @@
-# this file exists to support an editable PEP517 install and for `flake8` (https://github.com/PyCQA/flake8/issues/234)
+# flake8 does not support pyproject.toml (https://github.com/PyCQA/flake8/issues/234)
 
 [flake8]
 select = F, W, E101, E111, E112, E113, E401, E402, E501, E711, E722
diff --git a/pyproject.toml b/pyproject.toml
index 7319f90c..c30eb780 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,9 +14,8 @@ classifiers = [
 dependencies = [
     'jsonschema >=3.0.2',
     # The tests require code that is in asdf master
-    # but not yet released.  The package itself
-    # is compatible with asdf 2.7.
-    'asdf >=2.7.1',
+    # but not yet released.
+    'asdf >=2.14.1',
     'psutil >=5.7.2',
     'numpy >=1.16',
     'astropy >=5.0.4',
@@ -25,7 +24,6 @@ dynamic = ['version']
 
 [project.optional-dependencies]
 test = [
-    'asdf >=2.8.0',
     'psutil',
     'pytest >=4.6.0',
     'pytest-doctestplus',
@@ -47,8 +45,8 @@ aws = [
 
 [build-system]
 requires = [
-    "setuptools>=42",
-    "setuptools_scm[toml]>=3.4",
+    "setuptools >=61",
+    "setuptools_scm[toml] >=3.4",
     "wheel"
 ]
 build-backend = "setuptools.build_meta"