diff --git a/docs/changelog.md b/docs/changelog.md
index 13797b17..945ffefb 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+- Fix tests to account for new `typeshed_client` release
+  (#694)
 - Partial support for PEP 695-style type aliases (#690)
 - Add option to disable all error codes (#659)
 - Add hacky fix for bugs with hashability on type objects (#689)
diff --git a/pyanalyze/stubs/_pyanalyze_tests-stubs/cdata.pyi b/pyanalyze/stubs/_pyanalyze_tests-stubs/cdata.pyi
new file mode 100644
index 00000000..d5fda4e7
--- /dev/null
+++ b/pyanalyze/stubs/_pyanalyze_tests-stubs/cdata.pyi
@@ -0,0 +1,3 @@
+import ctypes
+
+def f() -> ctypes._CData: ...
diff --git a/pyanalyze/test_typeshed.py b/pyanalyze/test_typeshed.py
index 6c68a408..dc78f3fa 100644
--- a/pyanalyze/test_typeshed.py
+++ b/pyanalyze/test_typeshed.py
@@ -255,24 +255,10 @@ def test_typeddict(self):
 
     @assert_passes()
     def test_cdata(self):
-        import array
-        import mmap
-        import pickle
-
         def capybara():
-            from _typeshed import ReadableBuffer
-
-            def inner(b: ReadableBuffer):
-                assert_is_value(
-                    b,
-                    TypedValue(bytes)
-                    | TypedValue(bytearray)
-                    | TypedValue(memoryview)
-                    | GenericValue(array.array, [AnyValue(AnySource.explicit)])
-                    | TypedValue(mmap.mmap)
-                    | TypedValue("ctypes._CData")
-                    | TypedValue(pickle.PickleBuffer),
-                )
+            from _pyanalyze_tests.cdata import f
+
+            assert_is_value(f(), TypedValue("_ctypes._CData"))
 
     @assert_passes()
     def test_ast(self):