diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index b68cddd..236ac56 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 1.2.3
+current_version = 2.0.0
 commit = True
 tag = True
 
diff --git a/README.rst b/README.rst
index 49452e0..aeb6bc0 100644
--- a/README.rst
+++ b/README.rst
@@ -96,8 +96,8 @@ pandoc versioning semantics is `MAJOR.MAJOR.MINOR.PATCH <https://pvp.haskell.org
    :target: https://pypi.python.org/pypi/amsthm/
 .. |Downloads| image:: https://img.shields.io/pypi/dm/amsthm.svg
    :target: https://pypi.python.org/pypi/amsthm/
-.. |Commits since latest release| image:: https://img.shields.io/github/commits-since/ickc/pandoc-amsthm/v1.2.3.svg
-   :target: https://github.com/ickc/pandoc-amsthm/compare/v1.2.3...master
+.. |Commits since latest release| image:: https://img.shields.io/github/commits-since/ickc/pandoc-amsthm/v2.0.0.svg
+   :target: https://github.com/ickc/pandoc-amsthm/compare/v2.0.0...master
 .. |License| image:: https://img.shields.io/pypi/l/amsthm.svg
 .. |Conda Recipe| image:: https://img.shields.io/badge/recipe-amsthm-green.svg
    :target: https://anaconda.org/conda-forge/amsthm
diff --git a/docs/README.md b/docs/README.md
index 0dd15f5..2315ce3 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -20,7 +20,7 @@ title: amsthm---provide a syntax to use amsthm environments in pandoc,
 [![GitHub Releases](https://img.shields.io/github/tag/ickc/pandoc-amsthm.svg?label=github+release)](https://github.com/ickc/pandoc-amsthm/releases)
 [![Development Status](https://img.shields.io/pypi/status/amsthm.svg)](https://pypi.python.org/pypi/amsthm/)
 [![Downloads](https://img.shields.io/pypi/dm/amsthm.svg)](https://pypi.python.org/pypi/amsthm/)
-[![Commits since latest release](https://img.shields.io/github/commits-since/ickc/pandoc-amsthm/v1.2.3.svg)](https://github.com/ickc/pandoc-amsthm/compare/v1.2.3...master)
+[![Commits since latest release](https://img.shields.io/github/commits-since/ickc/pandoc-amsthm/v2.0.0.svg)](https://github.com/ickc/pandoc-amsthm/compare/v2.0.0...master)
 ![License](https://img.shields.io/pypi/l/amsthm.svg)
 
 [![Conda Recipe](https://img.shields.io/badge/recipe-amsthm-green.svg)](https://anaconda.org/conda-forge/amsthm)
diff --git a/docs/conf.py b/docs/conf.py
index bd171f2..9ea0759 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -23,7 +23,7 @@
 year = "2016-2021"
 author = "Kolen Cheung"
 copyright = f"{year}, {author}"
-version = release = "1.2.3"
+version = release = "2.0.0"
 
 pygments_style = "solarized-light"
 html_theme = "bootstrap"
diff --git a/makefile b/makefile
index 474359b..4f4b584 100644
--- a/makefile
+++ b/makefile
@@ -63,7 +63,7 @@ dist/docs/:
 # Deploy to PyPI
 ## by CI, properly git tagged
 pypi:
-	git push origin v1.2.3
+	git push origin v2.0.0
 ## Manually
 pypiManual:
 	rm -rf dist
@@ -88,9 +88,9 @@ print-%:
 
 setup.py:
 	poetry build
-	cd dist; tar -xf amsthm-1.2.3.tar.gz amsthm-1.2.3/setup.py
-	mv dist/amsthm-1.2.3/setup.py .
-	rm -rf dist/amsthm-1.2.3
+	cd dist; tar -xf amsthm-2.0.0.tar.gz amsthm-2.0.0/setup.py
+	mv dist/amsthm-2.0.0/setup.py .
+	rm -rf dist/amsthm-2.0.0
 
 .PHONY: editable
 # since poetry doesn't support editable, we can build and extract the setup.py,
diff --git a/pyproject.toml b/pyproject.toml
index 99f7539..feac481 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
 name = "amsthm"
-version = "1.2.3"
+version = "2.0.0"
 description = "amsthm—provide a syntax to use amsthm environments in pandoc, with output in LaTeX and HTML"
 license = "BSD-3-Clause"
 keywords = [
diff --git a/src/amsthm/__init__.py b/src/amsthm/__init__.py
index 263456a..ab05a25 100755
--- a/src/amsthm/__init__.py
+++ b/src/amsthm/__init__.py
@@ -19,7 +19,7 @@
 
     THM_DEF = list[Union[str, dict[str, str], dict[str, list[str]]]]
 
-__version__: str = "1.2.3"
+__version__: str = "2.0.0"
 
 PARENT_COUNTERS: set[str] = {
     "part",