diff --git a/pkgs/development/python-modules/cryptography/default.nix b/pkgs/development/python-modules/cryptography/default.nix
index 9f7bb3f1adb9..d122c42e846d 100644
--- a/pkgs/development/python-modules/cryptography/default.nix
+++ b/pkgs/development/python-modules/cryptography/default.nix
@@ -22,11 +22,11 @@
 
 buildPythonPackage rec {
   pname = "cryptography";
-  version = "3.0"; # Also update the hash in vectors.nix
+  version = "3.1"; # Also update the hash in vectors.nix
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0lr06a9317n2iwfqwz9mpalqm99acqwk1478arvyj1jj0ay4v4lf";
+    sha256 = "021yccbqr446zh1c9l8yj79h9bgbd1cwv0ppj168w9y67i3rlh16";
   };
 
   outputs = [ "out" "dev" ];
diff --git a/pkgs/development/python-modules/cryptography/vectors.nix b/pkgs/development/python-modules/cryptography/vectors.nix
index 02a3f44bb098..99f3b6f8974f 100644
--- a/pkgs/development/python-modules/cryptography/vectors.nix
+++ b/pkgs/development/python-modules/cryptography/vectors.nix
@@ -7,7 +7,7 @@ buildPythonPackage rec {
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0fa26ggksyhknb43cja1g0jwp35qkdbavivdq6yynj1igd2z1vsj";
+    sha256 = "10hixzqf2ppw8j61f6p04rgnq8ra6pjml68330s5af8df8xbqq16";
   };
 
   # No tests included