diff --git a/.github/workflows/lint-test-cover-docs.yml b/.github/workflows/lint-test-cover-docs.yml
index baa3ad4..baf5548 100644
--- a/.github/workflows/lint-test-cover-docs.yml
+++ b/.github/workflows/lint-test-cover-docs.yml
@@ -9,9 +9,9 @@ jobs:
         python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
     name: "Python ${{ matrix.python-version }}"
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Install Python.
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
           architecture: x64
diff --git a/.gitignore b/.gitignore
index 8aa3178..68bc17f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,7 +20,6 @@ parts/
 sdist/
 var/
 wheels/
-pip-wheel-metadata/
 share/python-wheels/
 *.egg-info/
 .installed.cfg
@@ -50,6 +49,7 @@ coverage.xml
 *.py,cover
 .hypothesis/
 .pytest_cache/
+cover/
 
 # Translations
 *.mo
@@ -72,6 +72,7 @@ instance/
 docs/_build/
 
 # PyBuilder
+.pybuilder/
 target/
 
 # Jupyter Notebook
@@ -82,7 +83,9 @@ profile_default/
 ipython_config.py
 
 # pyenv
-.python-version
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
 
 # pipenv
 #   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
@@ -91,7 +94,22 @@ ipython_config.py
 #   install all needed dependencies.
 #Pipfile.lock
 
-# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
 __pypackages__/
 
 # Celery stuff
@@ -128,5 +146,15 @@ dmypy.json
 # Pyre type checker
 .pyre/
 
-# Coverage reports
-cover/
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
diff --git a/pyproject.toml b/pyproject.toml
index 1c677a9..98e4e31 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "fe25519"
-version = "1.5.0"
+version = "2.0.0"
 description = """\
     Pure-Python data structure for working with Ed25519 \
     (and Ristretto) field elements and operations.\
@@ -20,11 +20,11 @@ Documentation = "https://fe25519.readthedocs.io"
 [project.optional-dependencies]
 docs = [
     "toml~=0.10.2",
-    "sphinx~=4.2.0",
-    "sphinx-rtd-theme~=1.0.0"
+    "sphinx~=5.0",
+    "sphinx-rtd-theme~=1.1.0"
 ]
 test = [
-    "pytest~=7.2",
+    "pytest~=7.4",
     "pytest-cov~=4.0",
     "parts~=1.7",
     "bitlist~=1.2",
@@ -43,7 +43,7 @@ publish = [
 
 [build-system]
 requires = [
-    "setuptools>=67.6"
+    "setuptools>=68.0"
 ]
 build-backend = "setuptools.build_meta"