diff --git a/pkgs/applications/networking/powerdns-admin/default.nix b/pkgs/applications/networking/powerdns-admin/default.nix
index 81195c4e212..51a51b3fb1c 100644
--- a/pkgs/applications/networking/powerdns-admin/default.nix
+++ b/pkgs/applications/networking/powerdns-admin/default.nix
@@ -29,7 +29,7 @@ let
   };
 
   pythonDeps = with python.pkgs; [
-    flask flask_assets flask_login flask_sqlalchemy flask_migrate flask-seasurf flask_mail flask-session flask-sslify
+    flask flask_assets flask_login flask-sqlalchemy flask_migrate flask-seasurf flask_mail flask-session flask-sslify
     mysqlclient psycopg2 sqlalchemy
     cffi configobj cryptography bcrypt requests ldap pyotp qrcode dnspython
     gunicorn python3-saml pytz cssmin rjsmin authlib bravado-core
diff --git a/pkgs/development/python-modules/factory_boy/default.nix b/pkgs/development/python-modules/factory_boy/default.nix
index 1c612e2b57e..407083e4f69 100644
--- a/pkgs/development/python-modules/factory_boy/default.nix
+++ b/pkgs/development/python-modules/factory_boy/default.nix
@@ -4,7 +4,7 @@
 , faker
 , fetchPypi
 , flask
-, flask_sqlalchemy
+, flask-sqlalchemy
 , mongoengine
 , pytestCheckHook
 , sqlalchemy
@@ -28,7 +28,7 @@ buildPythonPackage rec {
   checkInputs = [
     django
     flask
-    flask_sqlalchemy
+    flask-sqlalchemy
     mongoengine
     pytestCheckHook
     sqlalchemy
diff --git a/pkgs/development/python-modules/flask-admin/default.nix b/pkgs/development/python-modules/flask-admin/default.nix
index 75573c7a69d..a3bc87c8d08 100644
--- a/pkgs/development/python-modules/flask-admin/default.nix
+++ b/pkgs/development/python-modules/flask-admin/default.nix
@@ -6,7 +6,7 @@
 , enum34
 , fetchPypi
 , flask
-, flask_sqlalchemy
+, flask-sqlalchemy
 , flask-babelex
 , flask-mongoengine
 , geoalchemy2
@@ -46,7 +46,7 @@ buildPythonPackage rec {
     arrow
     colour
     email-validator
-    flask_sqlalchemy
+    flask-sqlalchemy
     flask-babelex
     flask-mongoengine
     geoalchemy2
diff --git a/pkgs/development/python-modules/flask-appbuilder/default.nix b/pkgs/development/python-modules/flask-appbuilder/default.nix
index 8d79b6b7c8b..e52ecfc6493 100644
--- a/pkgs/development/python-modules/flask-appbuilder/default.nix
+++ b/pkgs/development/python-modules/flask-appbuilder/default.nix
@@ -10,7 +10,7 @@
 , flask-babel
 , flask_login
 , flask-openid
-, flask_sqlalchemy
+, flask-sqlalchemy
 , flask-wtf
 , flask-jwt-extended
 , jsonschema
@@ -61,7 +61,7 @@ buildPythonPackage rec {
     flask-babel
     flask_login
     flask-openid
-    flask_sqlalchemy
+    flask-sqlalchemy
     flask-wtf
     flask-jwt-extended
     jsonschema
diff --git a/pkgs/development/python-modules/flask-migrate/default.nix b/pkgs/development/python-modules/flask-migrate/default.nix
index 9f70e129ae1..04532032038 100644
--- a/pkgs/development/python-modules/flask-migrate/default.nix
+++ b/pkgs/development/python-modules/flask-migrate/default.nix
@@ -5,7 +5,7 @@
 , alembic
 , flask
 , flask_script
-, flask_sqlalchemy
+, flask-sqlalchemy
 , python
 }:
 
@@ -25,7 +25,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [
     alembic
     flask
-    flask_sqlalchemy
+    flask-sqlalchemy
   ];
 
   pythonImportsCheck = [
diff --git a/pkgs/development/python-modules/flask-security-too/default.nix b/pkgs/development/python-modules/flask-security-too/default.nix
index e1a598d3a0b..35216c6c03a 100644
--- a/pkgs/development/python-modules/flask-security-too/default.nix
+++ b/pkgs/development/python-modules/flask-security-too/default.nix
@@ -12,7 +12,7 @@
 , flask_mail
 
 # extras: fsqla
-, flask_sqlalchemy
+, flask-sqlalchemy
 , sqlalchemy
 , sqlalchemy-utils
 
@@ -74,7 +74,7 @@ buildPythonPackage rec {
       flask_mail
     ];
     fsqla = [
-      flask_sqlalchemy
+      flask-sqlalchemy
       sqlalchemy
       sqlalchemy-utils
     ];
diff --git a/pkgs/development/python-modules/ihatemoney/default.nix b/pkgs/development/python-modules/ihatemoney/default.nix
index bacaea2f2cb..71eb8feb543 100644
--- a/pkgs/development/python-modules/ihatemoney/default.nix
+++ b/pkgs/development/python-modules/ihatemoney/default.nix
@@ -17,7 +17,7 @@
 , flask_mail
 , flask_migrate
 , flask-restful
-, flask_sqlalchemy
+, flask-sqlalchemy
 , flask-talisman
 , flask-wtf
 , debts
diff --git a/pkgs/development/python-modules/nplusone/default.nix b/pkgs/development/python-modules/nplusone/default.nix
index 898d209d913..13e0d28a301 100644
--- a/pkgs/development/python-modules/nplusone/default.nix
+++ b/pkgs/development/python-modules/nplusone/default.nix
@@ -3,7 +3,7 @@
 , buildPythonPackage
 , fetchFromGitHub
 , flake8
-, flask_sqlalchemy
+, flask-sqlalchemy
 , isPy27
 , mock
 , peewee
@@ -33,7 +33,7 @@ buildPythonPackage rec {
 
   checkInputs = [
     flake8
-    flask_sqlalchemy
+    flask-sqlalchemy
     mock
     peewee
     pytest-django
diff --git a/pkgs/development/python-modules/sqlalchemy-continuum/default.nix b/pkgs/development/python-modules/sqlalchemy-continuum/default.nix
index da64d44a43f..d0970d4277d 100644
--- a/pkgs/development/python-modules/sqlalchemy-continuum/default.nix
+++ b/pkgs/development/python-modules/sqlalchemy-continuum/default.nix
@@ -3,7 +3,7 @@
 , buildPythonPackage
 , flask
 , flask_login
-, flask_sqlalchemy
+, flask-sqlalchemy
 , flexmock
 , pytestCheckHook
 , sqlalchemy
@@ -33,7 +33,7 @@ buildPythonPackage rec {
     sqlalchemy-i18n
     flask
     flask_login
-    flask_sqlalchemy
+    flask-sqlalchemy
     flexmock
   ];
 
diff --git a/pkgs/tools/admin/pgadmin/default.nix b/pkgs/tools/admin/pgadmin/default.nix
index 58bba70e902..4813cd84364 100644
--- a/pkgs/tools/admin/pgadmin/default.nix
+++ b/pkgs/tools/admin/pgadmin/default.nix
@@ -32,7 +32,7 @@ let
     flask_login
     flask_mail
     flask_migrate
-    flask_sqlalchemy
+    flask-sqlalchemy
     flask-wtf
     flask-compress
     passlib
diff --git a/pkgs/top-level/python-aliases.nix b/pkgs/top-level/python-aliases.nix
index e056a381f5a..b5f3a9b39a3 100644
--- a/pkgs/top-level/python-aliases.nix
+++ b/pkgs/top-level/python-aliases.nix
@@ -73,6 +73,7 @@ mapAliases ({
   email_validator = email-validator; # added 2022-06-22
   fake_factory = throw "fake_factory has been removed because it is unused and deprecated by upstream since 2016."; # added 2022-05-30
   faulthandler = throw "faulthandler is built into ${python.executable}"; # added 2021-07-12
+  flask_sqlalchemy = flask-sqlalchemy; # added 2022-07-20
   flask_testing = flask-testing; # added 2022-04-25
   flask_wtf = flask-wtf; # added 2022-05-24
   garminconnect-ha = garminconnect; # added 2022-02-05
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index dca15a31b89..29a3ab98091 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3219,7 +3219,7 @@ in {
 
   flask-sockets = callPackage ../development/python-modules/flask-sockets { };
 
-  flask_sqlalchemy = callPackage ../development/python-modules/flask-sqlalchemy { };
+  flask-sqlalchemy = callPackage ../development/python-modules/flask-sqlalchemy { };
 
   flask-sslify = callPackage ../development/python-modules/flask-sslify { };