diff --git a/requirements-slim.txt b/requirements-slim.txt
index 672bdfed2..be0c98678 100644
--- a/requirements-slim.txt
+++ b/requirements-slim.txt
@@ -3,7 +3,7 @@ attrs==20.2.0
 Automat==20.2.0
 cffi==1.14.3
 constantly==15.1.0
-cryptography==2.9.2
+cryptography==3.2
 hyperlink==20.0.1
 idna==2.10
 incremental==17.5.0
diff --git a/requirements.txt b/requirements.txt
index 3fc08a3cc..564614744 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ Automat==20.2.0
 av==8.0.2
 cffi==1.14.3
 constantly==15.1.0
-cryptography==2.9.2
+cryptography==3.2
 dbus-python==1.2.16
 hyperlink==20.0.1
 idna==2.10
diff --git a/setup.py b/setup.py
old mode 100755
new mode 100644
index 7e4ad7e86..2ecb6b95b
--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,7 @@
     ],
     install_requires=[
         'appdirs>=1,<2',
-        'cryptography>=2.2,<3',
+        'cryptography>=2.2,<4',
         'names>=0,<1',
         'progressbar2>=3.20,<4',
         'pyasn1>=0,<1',