diff --git a/setup.py b/setup.py
index 0b75fd8..2f8dc52 100644
--- a/setup.py
+++ b/setup.py
@@ -53,7 +53,7 @@ setup(
     license='GPLv3',
     platforms=['any'],
     py_modules=['buku'],
-    install_requires=['urllib3>=1.13.1', 'cryptography>=4.4.1', 'beautifulsoup4>=1.2.3'],
+    install_requires=['urllib3>=1.13.1', 'beautifulsoup4>=4.4.1', 'cryptography>=1.2.3'],
     packages=find_packages(exclude=['tests']),
     include_package_data=True,
     entry_points={