diff --git a/CHANGELOG.md b/CHANGELOG.md
index e450948..1ea68ea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.0.1] - 2025-06-09
+
+### Fixed
+
+- Downgrade `cryptography` version to support python 3.9.0 and later.
+
 ## [3.0.0] - 2025-06-09
 
 ### Added
@@ -507,6 +513,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 - Initial release of the project, laying the foundation for future enhancements and features.
 
+[3.0.1]: https://github.com/hyugogirubato/KeyDive/releases/tag/v3.0.1
 [3.0.0]: https://github.com/hyugogirubato/KeyDive/releases/tag/v3.0.0
 [2.2.1]: https://github.com/hyugogirubato/KeyDive/releases/tag/v2.2.1
 [2.2.0]: https://github.com/hyugogirubato/KeyDive/releases/tag/v2.2.0
diff --git a/keydive/__init__.py b/keydive/__init__.py
index 47af1b1..910a88e 100644
--- a/keydive/__init__.py
+++ b/keydive/__init__.py
@@ -4,4 +4,4 @@ from .adb.vendor import Vendor
 from .drm.cdm import Cdm
 from .drm.keybox import KeyBox
 
-__version__ = '3.0.0'
+__version__ = '3.0.1'
diff --git a/pyproject.toml b/pyproject.toml
index e5aa965..4137ffc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
 name = "keydive"
-version = "3.0.0"
+version = "3.0.1"
 description = "Extract Widevine L3 keys from Android devices effortlessly, spanning multiple Android versions for DRM research and education."
 license = "MIT"
 authors = ["hyugogirubato <65763543+hyugogirubato@users.noreply.github.com>"]
@@ -39,7 +39,7 @@ asn1crypto = ">=1.5.1"
 coloredlogs = ">=15.0.1"
 construct = "^2.10.70"
 crccheck = ">=1.3.0"
-cryptography = ">=45.0.3"
+cryptography = ">=43.0.3"
 frida = ">=17.1.3"
 pathvalidate = ">=3.2.1"
 protobuf = "^5.29.5"