Drop support for marshmallow 3; bump minimum marshmallow-sqlalchemy (#391)

* Drop support for marshmallow 3

* Bump min version of ma-sqla

* uv sync

* update changelog

Author: sloria

CHANGELOG.rst

@@ -9,6 +9,11 @@ Bug fixes:
 * Fix setting of scoped session on ``SQLAlchemyAuto`` (:pr:`382`).
   Thanks :user:`galuszkak` for the PR.
 
+Other changes:
+
+* Drop support for marshmallow 3, which is EOL.
+* Bump minimum version of marshmallow-sqlalchemy to 1.4.0 for the `sqlalchemy` extra.
+
 1.4.0 (2026-02-04)
 ******************
 

pyproject.toml

@@ -3,15 +3,14 @@ name = "flask-marshmallow"
 version = "1.4.0"
 description = "Flask + marshmallow for beautiful APIs"
 readme = "README.rst"
-license = { file = "LICENSE" }
+license = "MIT"
 maintainers = [
   { name = "Steven Loria", email = "oss@stevenloria.com" },
   { name = "Stephen Rosen", email = "sirosen0@gmail.com" },
 ]
 classifiers = [
   "Environment :: Web Environment",
   "Intended Audience :: Developers",
-  "License :: OSI Approved :: MIT License",
   "Natural Language :: English",
   "Programming Language :: Python :: 3",
   "Programming Language :: Python :: 3.10",
@@ -22,14 +21,14 @@ classifiers = [
   "Topic :: Internet :: WWW/HTTP :: Dynamic Content",
 ]
 requires-python = ">=3.10"
-dependencies = ["Flask>=2.2", "marshmallow>=3.0.0"]
+dependencies = ["Flask>=2.2", "marshmallow>=4.0.0"]
 
 [project.urls]
 Issues = "https://github.com/marshmallow-code/flask-marshmallow/issues"
 Funding = "https://opencollective.com/marshmallow"
 
 [project.optional-dependencies]
-sqlalchemy = ["flask-sqlalchemy>=3.0.0", "marshmallow-sqlalchemy>=0.29.0"]
+sqlalchemy = ["flask-sqlalchemy>=3.0.0", "marshmallow-sqlalchemy>=1.4.0"]
 
 [dependency-groups]
 docs = ["marshmallow-sqlalchemy>=0.19.0", "sphinx-issues", "sphinx>=8.1"]

tox.ini

@@ -11,8 +11,8 @@ extras = sqlalchemy
 dependency_groups = tests
 deps =
     marshmallowdev: https://github.com/marshmallow-code/marshmallow/archive/dev.tar.gz
-    lowest: marshmallow==3.0.0
-    lowest: marshmallow-sqlalchemy==0.29.0
+    lowest: marshmallow==4.0.0
+    lowest: marshmallow-sqlalchemy==1.4.0
     lowest: flask-sqlalchemy==3.0.0
     lowest: flask==2.2
     lowest: werkzeug==2.2.2