--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,7 +30,8 @@ foreign-types-shared = "0.1"
 openssl = "0.10.79"
 openssl-sys = "0.9.115"
 pem = { version = "3", default-features = false }
-pyo3 = { version = "0.28", features = ["abi3"] }
+# Disable abi3 for maturin 1.4.0 compatibility - build for specific Python version
+pyo3 = { version = "0.28" }
 pyo3-build-config = { version = "0.28" }
 self_cell = "1"

--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,10 +2,10 @@
 # These requirements must be kept sync with the requirements in
 # ./.github/requirements/build-requirements.{in,txt}
 requires = [
-    "maturin>=1.9.4,<2,!=1.12.0",
+    "maturin>=1.4.0,<2,!=1.12.0",

     # Must be kept in sync with `project.dependencies`
-    "cffi>=2.0.0; platform_python_implementation != 'PyPy'",
+    "cffi>=1.16; platform_python_implementation != 'PyPy'",
     # Used by cffi (which import distutils, and in Python 3.12, distutils has
     # been removed from the stdlib, but installing setuptools puts it back) as
     # well as our build.rs for the rust/cffi bridge.
@@ -22,7 +22,6 @@ authors = [
 description = "cryptography is a package which provides cryptographic recipes and primitives to Python developers."
 readme = "README.rst"
 license = "Apache-2.0 OR BSD-3-Clause"
-license-files = [ "LICENSE", "LICENSE.APACHE", "LICENSE.BSD" ]
 classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Intended Audience :: Developers",
@@ -49,7 +48,7 @@ classifiers = [
 requires-python = ">=3.9,!=3.9.0,!=3.9.1"
 dependencies = [
     # Must be kept in sync with `build-system.requires`
-    "cffi>=2.0.0; platform_python_implementation != 'PyPy'",
+    "cffi>=1.16; platform_python_implementation != 'PyPy'",
     # Must be kept in sync with ./.github/requirements/build-requirements.{in,txt}
     "typing-extensions>=4.13.2; python_version < '3.11'",
 ]