diff --git a/pkgs/development/python-modules/argon2_cffi/default.nix b/pkgs/development/python-modules/argon2-cffi/default.nix
similarity index 91%
rename from pkgs/development/python-modules/argon2_cffi/default.nix
rename to pkgs/development/python-modules/argon2-cffi/default.nix
index 4ecf5fbc5f0..ed79243a6bd 100644
--- a/pkgs/development/python-modules/argon2_cffi/default.nix
+++ b/pkgs/development/python-modules/argon2-cffi/default.nix
@@ -13,13 +13,12 @@
 }:
 
 buildPythonPackage rec {
-  pname = "argon2_cffi";
+  pname = "argon2-cffi";
   version = "21.3.0";
   format = "flit";
 
   src = fetchPypi {
-    pname = "argon2-cffi";
-    inherit version;
+    inherit pname version;
     sha256 = "d384164d944190a7dd7ef22c6aa3ff197da12962bd04b17f64d4e93d934dba5b";
   };
 
diff --git a/pkgs/development/python-modules/django/4.nix b/pkgs/development/python-modules/django/4.nix
index f36c064a647..924ece59fea 100644
--- a/pkgs/development/python-modules/django/4.nix
+++ b/pkgs/development/python-modules/django/4.nix
@@ -17,7 +17,7 @@
 
 # tests
 , aiosmtpd
-, argon2_cffi
+, argon2-cffi
 , bcrypt
 , docutils
 , geoip2
@@ -70,7 +70,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     aiosmtpd
-    argon2_cffi
+    argon2-cffi
     asgiref
     bcrypt
     docutils
diff --git a/pkgs/development/python-modules/flask-security-too/default.nix b/pkgs/development/python-modules/flask-security-too/default.nix
index c3d98e405f3..70a6b6e1d6b 100644
--- a/pkgs/development/python-modules/flask-security-too/default.nix
+++ b/pkgs/development/python-modules/flask-security-too/default.nix
@@ -32,7 +32,7 @@
 , passlib
 
 # tests
-, argon2_cffi
+, argon2-cffi
 , flask-mongoengine
 , mongoengine
 , mongomock
@@ -86,7 +86,7 @@ buildPythonPackage rec {
   };
 
   checkInputs = [
-    argon2_cffi
+    argon2-cffi
     flask-mongoengine
     mongoengine
     mongomock
diff --git a/pkgs/development/python-modules/jupyter_server/default.nix b/pkgs/development/python-modules/jupyter_server/default.nix
index dd8368676d1..0001dd5e937 100644
--- a/pkgs/development/python-modules/jupyter_server/default.nix
+++ b/pkgs/development/python-modules/jupyter_server/default.nix
@@ -6,7 +6,7 @@
 , pythonOlder
 , pytestCheckHook
 , pytest-tornasync
-, argon2_cffi
+, argon2-cffi
 , jinja2
 , tornado
 , pyzmq
@@ -44,7 +44,7 @@ buildPythonPackage rec {
   ];
 
   propagatedBuildInputs = [
-    argon2_cffi
+    argon2-cffi
     jinja2
     tornado
     pyzmq
diff --git a/pkgs/development/python-modules/keyrings-cryptfile/default.nix b/pkgs/development/python-modules/keyrings-cryptfile/default.nix
index 7f2cacea629..23b8b66ea9f 100644
--- a/pkgs/development/python-modules/keyrings-cryptfile/default.nix
+++ b/pkgs/development/python-modules/keyrings-cryptfile/default.nix
@@ -2,7 +2,7 @@
 , buildPythonPackage
 , fetchPypi
 , fetchpatch
-, argon2_cffi
+, argon2-cffi
 , keyring
 , pycryptodome
 , pytestCheckHook
@@ -32,7 +32,7 @@ buildPythonPackage rec {
   ];
 
   propagatedBuildInputs = [
-    argon2_cffi
+    argon2-cffi
     keyring
     pycryptodome
   ];
diff --git a/pkgs/development/python-modules/notebook/default.nix b/pkgs/development/python-modules/notebook/default.nix
index 3ead3cf4fe2..d76909efdcf 100644
--- a/pkgs/development/python-modules/notebook/default.nix
+++ b/pkgs/development/python-modules/notebook/default.nix
@@ -2,7 +2,7 @@
 , lib
 , buildPythonPackage
 , fetchPypi
-, argon2_cffi
+, argon2-cffi
 , nose
 , nose_warnings_filters
 , glibcLocales
@@ -43,7 +43,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [
     jinja2 tornado ipython_genutils traitlets jupyter_core send2trash
     jupyter-client nbformat nbconvert ipykernel terminado requests pexpect
-    prometheus-client argon2_cffi
+    prometheus-client argon2-cffi
   ];
 
   # disable warning_filters
diff --git a/pkgs/development/python-modules/passlib/default.nix b/pkgs/development/python-modules/passlib/default.nix
index 9e35fb8f76a..8fd7b177a27 100644
--- a/pkgs/development/python-modules/passlib/default.nix
+++ b/pkgs/development/python-modules/passlib/default.nix
@@ -1,7 +1,7 @@
 { lib
 , buildPythonPackage
 , fetchPypi
-, argon2_cffi
+, argon2-cffi
 , bcrypt
 , cryptography
 , pytestCheckHook
@@ -17,7 +17,7 @@ buildPythonPackage rec {
   };
 
   passthru.extras-require = {
-    argon2 = [ argon2_cffi ];
+    argon2 = [ argon2-cffi ];
     bcrypt = [ bcrypt ];
     totp = [ cryptography ];
   };
diff --git a/pkgs/development/python-modules/pykeepass/default.nix b/pkgs/development/python-modules/pykeepass/default.nix
index cb893c98ac9..27470b66a62 100644
--- a/pkgs/development/python-modules/pykeepass/default.nix
+++ b/pkgs/development/python-modules/pykeepass/default.nix
@@ -1,6 +1,6 @@
 { lib, fetchFromGitHub, buildPythonPackage
 , lxml, pycryptodomex, construct
-, argon2_cffi, python-dateutil, future
+, argon2-cffi, python-dateutil, future
 , python
 }:
 
@@ -21,10 +21,10 @@ buildPythonPackage rec {
 
   propagatedBuildInputs = [
     lxml pycryptodomex construct
-    argon2_cffi python-dateutil future
+    argon2-cffi python-dateutil future
   ];
 
-  propagatedNativeBuildInputs = [ argon2_cffi ];
+  propagatedNativeBuildInputs = [ argon2-cffi ];
 
   checkPhase = ''
     ${python.interpreter} -m unittest tests.tests
diff --git a/pkgs/top-level/python-aliases.nix b/pkgs/top-level/python-aliases.nix
index a24a8e2c98f..d76d079eab2 100644
--- a/pkgs/top-level/python-aliases.nix
+++ b/pkgs/top-level/python-aliases.nix
@@ -36,6 +36,7 @@ mapAliases ({
   aioh2 = throw "aioh2 has been removed because it is abandoned and broken."; # Added 2022-03-30
   ansible-base = throw "ansible-base has been removed, because it is end of life"; # added 2022-03-30
   anyjson = throw "anyjson has been removed, it was using setuptools 2to3 translation feature, which has been removed in setuptools 58"; # added 2022-01-18
+  argon2_cffi = argon2-cffi; # added 2022-05-09
   asyncio-nats-client = nats-py; # added 2022-02-08
   bitcoin-price-api = throw "bitcoin-price-api has been removed, it was using setuptools 2to3 translation feautre, which has been removed in setuptools 58"; # added 2022-02-15
   blockdiagcontrib-cisco = throw "blockdiagcontrib-cisco is not compatible with blockdiag 2.0.0 and has been removed."; # added 2020-11-29
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index f3c6b11d4a6..6b5ce3f8ba4 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -626,7 +626,7 @@ in {
 
   argh = callPackage ../development/python-modules/argh { };
 
-  argon2_cffi = callPackage ../development/python-modules/argon2_cffi { };
+  argon2-cffi = callPackage ../development/python-modules/argon2-cffi { };
 
   argon2-cffi-bindings = callPackage ../development/python-modules/argon2-cffi-bindings { };