diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index 0a73a23489f6d..e43cb90ae094d 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -8,7 +8,7 @@ attrs==19.3.0
 bcrypt==3.1.7
 certifi>=2020.6.20
 ciso8601==2.1.3
-cryptography==2.9.2
+cryptography==3.1.1
 defusedxml==0.6.0
 distro==1.5.0
 emoji==0.5.4
diff --git a/requirements.txt b/requirements.txt
index 91f09a543905c..f7825c30e3107 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ ciso8601==2.1.3
 importlib-metadata==1.6.0;python_version<'3.8'
 jinja2>=2.11.2
 PyJWT==1.7.1
-cryptography==2.9.2
+cryptography==3.1.1
 pip>=8.0.3
 python-slugify==4.0.1
 pytz>=2020.1
diff --git a/setup.py b/setup.py
index 022f5547655d4..39393d5251000 100755
--- a/setup.py
+++ b/setup.py
@@ -43,7 +43,7 @@
     "jinja2>=2.11.2",
     "PyJWT==1.7.1",
     # PyJWT has loose dependency. We want the latest one.
-    "cryptography==2.9.2",
+    "cryptography==3.1.1",
     "pip>=8.0.3",
     "python-slugify==4.0.1",
     "pytz>=2020.1",