diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index bc1c51042..cee4abede 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -29,7 +29,7 @@ repos:
     - id: text-unicode-replacement-char
 
 - repo: https://github.com/codespell-project/codespell
-  rev: v2.2.6
+  rev: v2.3.0
   hooks:
     - id: codespell
       args: ["--write-changes"]
@@ -43,22 +43,22 @@ repos:
       exclude: "asdf/(extern||_jsonschema)/.*"
 
 - repo: https://github.com/astral-sh/ruff-pre-commit
-  rev: 'v0.3.5'
+  rev: 'v0.6.8'
   hooks:
     - id: ruff
       args: ["--fix"]
 
 - repo: https://github.com/psf/black
-  rev: 24.3.0
+  rev: 24.8.0
   hooks:
     - id: black
 
 - repo: https://github.com/asottile/blacken-docs
-  rev: '1.16.0'
+  rev: '1.18.0'
   hooks:
     - id: blacken-docs
 
 - repo: https://github.com/abravalheri/validate-pyproject
-  rev: "v0.16"
+  rev: "v0.20.2"
   hooks:
     - id: validate-pyproject
diff --git a/asdf/_tests/test_file_format.py b/asdf/_tests/test_file_format.py
index 954da0721..16f0aad48 100644
--- a/asdf/_tests/test_file_format.py
+++ b/asdf/_tests/test_file_format.py
@@ -22,7 +22,6 @@ def test_no_yaml_end_marker(tmp_path):
         pass
 
     buff.seek(0)
-    fd = generic_io.InputStream(buff, "r")
     with pytest.raises(ValueError, match=r"End of YAML marker not found"), asdf.open(buff):
         pass
 
diff --git a/asdf/_tests/test_lazy_nodes.py b/asdf/_tests/test_lazy_nodes.py
index fa8a9fd60..6d242d121 100644
--- a/asdf/_tests/test_lazy_nodes.py
+++ b/asdf/_tests/test_lazy_nodes.py
@@ -119,7 +119,7 @@ def test_node_inheritance(NodeClass, data, base):
 )
 def test_node_empty_init(NodeClass, base):
     node = NodeClass()
-    assert type(node.tagged) == base
+    assert type(node.tagged) is base
 
 
 @pytest.mark.parametrize(
diff --git a/asdf/_tests/test_tagged.py b/asdf/_tests/test_tagged.py
index a98de2790..9c8298b32 100644
--- a/asdf/_tests/test_tagged.py
+++ b/asdf/_tests/test_tagged.py
@@ -43,7 +43,7 @@ def test_tagged_list_base():
 
     assert isinstance(value.base, list)
     assert not isinstance(value.base, TaggedList)
-    assert value.base.__class__ == list
+    assert value.base.__class__ is list
 
 
 def test_tagged_dict_deepcopy():
@@ -83,7 +83,7 @@ def test_tagged_dict_base():
 
     assert isinstance(value.base, dict)
     assert not isinstance(value.base, TaggedDict)
-    assert value.base.__class__ == dict
+    assert value.base.__class__ is dict
 
 
 def test_tagged_string_deepcopy():
@@ -116,7 +116,7 @@ def test_tagged_string_base():
 
     assert isinstance(value.base, str)
     assert not isinstance(value.base, TaggedString)
-    assert value.base.__class__ == str
+    assert value.base.__class__ is str
 
 
 ASDF_UNIT_TAG = "stsci.edu:asdf/unit/unit-1.0.0"
diff --git a/asdf/extension/_manager.py b/asdf/extension/_manager.py
index cb6a10d2c..d02b35600 100644
--- a/asdf/extension/_manager.py
+++ b/asdf/extension/_manager.py
@@ -82,7 +82,7 @@ def __init__(self, extensions):
         # imported. We don't want to do this unnecessarily and since
         # class instances do not contain the public class path
         # we adopt a strategy of checking class paths and only
-        # registering those that have already been imported. Thiss
+        # registering those that have already been imported. This
         # is ok because asdf will only use the converter type
         # when attempting to serialize an object in memory (so the
         # public class path will already be imported at the time
diff --git a/requirements-dev.txt b/requirements-dev.txt
index b9fdd75fb..1ddb3871d 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,7 +4,3 @@ git+https://github.com/yaml/pyyaml.git
 git+https://github.com/python-attrs/attrs
 
 numpy>=0.0.dev0
-# although we don't use scipy, we include it here so that any dependency
-# that uses it during these tests will use the development version
-# which is more likely to work with the above development version of numpy
-scipy>=0.0.dev0