diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 9ec0632..7fca0d5 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,8 +1,8 @@
 Changelog
 =========
 
-0.16.0 (unreleased)
-*******************
+1.0.0 (unreleased)
+******************
 
 Features:
 
@@ -18,6 +18,12 @@ Support:
 * Test against Python 3.12.
 * Drop support for Python 3.7.
 
+Other changes:
+
+* *Backwards-incompatible*: Remove ```flask_marshmallow.__version__`` 
+  and ``flask_marshmallow.__version_info__`` attributes (:pr:`284`). 
+  Use feature detection or ``importlib.metadata.version("flask-marshmallow")`` instead.
+
 0.15.0 (2023-04-05)
 *******************
 
diff --git a/setup.py b/setup.py
index 1e01dde..89228c1 100644
--- a/setup.py
+++ b/setup.py
@@ -1,5 +1,3 @@
-import re
-
 from setuptools import find_packages, setup
 
 EXTRAS_REQUIRE = {
@@ -15,23 +13,6 @@
 REQUIRES = ["Flask", "marshmallow>=3.0.0", "packaging>=17.0"]
 
 
-def find_version(fname):
-    """Attempts to find the version number in the file names fname.
-    Raises RuntimeError if not found.
-    """
-    version = ""
-    with open(fname) as fp:
-        reg = re.compile(r'__version__ = [\'"]([^\'"]*)[\'"]')
-        for line in fp:
-            m = reg.match(line)
-            if m:
-                version = m.group(1)
-                break
-    if not version:
-        raise RuntimeError("Cannot find version information")
-    return version
-
-
 def read(fname):
     with open(fname) as fp:
         content = fp.read()
@@ -40,7 +21,7 @@ def read(fname):
 
 setup(
     name="flask-marshmallow",
-    version=find_version("src/flask_marshmallow/__init__.py"),
+    version="1.0.0",
     description="Flask + marshmallow for beautiful APIs",
     long_description=read("README.rst"),
     author="Steven Loria",
diff --git a/src/flask_marshmallow/__init__.py b/src/flask_marshmallow/__init__.py
index b6b3b9a..264bc7a 100755
--- a/src/flask_marshmallow/__init__.py
+++ b/src/flask_marshmallow/__init__.py
@@ -6,7 +6,6 @@
     with your Flask application.
 """
 import warnings
-from packaging.version import Version
 
 from marshmallow import fields as base_fields, exceptions, pprint
 
@@ -30,8 +29,6 @@
     else:
         has_sqla = True
 
-__version__ = "0.15.0"
-__version_info__ = Version(__version__).release
 __all__ = [
     "EXTENSION_NAME",
     "Marshmallow",
@@ -39,7 +36,6 @@
     "fields",
     "exceptions",
     "pprint",
-    "validate",
 ]
 
 EXTENSION_NAME = "flask-marshmallow"