diff --git a/requirements.txt b/requirements.txt
index 09f445b..2c6c996 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-cryptography==2.6.1
+cryptography==3.2
diff --git a/setup.py b/setup.py
index f662cc6..a0a0705 100644
--- a/setup.py
+++ b/setup.py
@@ -15,7 +15,7 @@ setup(
     url="http://github.com/mjg59/python-broadlink",
     packages=find_packages(),
     scripts=[],
-    install_requires=["cryptography>=2.1.1"],
+    install_requires=["cryptography>=3.2"],
     description="Python API for controlling Broadlink IR controllers",
     classifiers=[
         "Development Status :: 4 - Beta",