diff --git a/pkgs/development/python-modules/cryptography/default.nix b/pkgs/development/python-modules/cryptography/default.nix
index fd6cbfc512e..9b35b5654e2 100644
--- a/pkgs/development/python-modules/cryptography/default.nix
+++ b/pkgs/development/python-modules/cryptography/default.nix
@@ -15,6 +15,7 @@
 , pytest
 , pytest-subtests
 , pretend
+, libiconv
 , iso8601
 , pytz
 , hypothesis
@@ -48,7 +49,7 @@ buildPythonPackage rec {
   ] ++ (with rustPlatform; [ rust.cargo rust.rustc ]);
 
   buildInputs = [ openssl ]
-             ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security;
+             ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security libiconv ];
   propagatedBuildInputs = [
     packaging
     six
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 1608984f288..23da1eab54d 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1590,7 +1590,9 @@ in {
 
   cryptacular = callPackage ../development/python-modules/cryptacular { };
 
-  cryptography = callPackage ../development/python-modules/cryptography { };
+  cryptography = callPackage ../development/python-modules/cryptography {
+    inherit (pkgs.darwin) libiconv;
+  };
 
   cryptography_vectors = callPackage ../development/python-modules/cryptography/vectors.nix { };