diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index eb05b8f2..9ff4f0a5 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -36,7 +36,7 @@ jobs:
 
       - name: Install poetry
         if: env.PUBLISH == 'true'
-        run: pipx install "poetry==1.4.0"
+        run: pipx install "poetry==1.5.0"
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 496067df..dedc9c3e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Install poetry
-        run: pipx install "poetry==1.4.0"
+        run: pipx install "poetry==1.5.0"
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
@@ -56,7 +56,7 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Install poetry
-        run: pipx install "poetry==1.4.0"
+        run: pipx install "poetry==1.5.0"
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
diff --git a/.tool-versions b/.tool-versions
index d57cf162..5acb8a70 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,2 +1,2 @@
-poetry 1.4.0
+poetry 1.5.0
 python 3.10.7 3.9.13 3.8.13 3.7.12
diff --git a/CHANGES b/CHANGES
index 9b10df5f..0fb1db9f 100644
--- a/CHANGES
+++ b/CHANGES
@@ -23,6 +23,9 @@ $ pip install --user --upgrade --pre unihan-db
   formatting can be done almost instantly.
 
   This change replaces black, isort, flake8 and flake8 plugins.
+- poetry: 1.4.0 -> 1.5.0
+
+  See also: https://github.com/python-poetry/poetry/releases/tag/1.5.0
 
 [ruff]: https://ruff.rs
 
diff --git a/poetry.lock b/poetry.lock
index 35431f56..20ac1758 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,10 +1,9 @@
-# This file is automatically @generated by Poetry 1.4.0 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.5.0 and should not be changed by hand.
 
 [[package]]
 name = "alabaster"
 version = "0.7.13"
 description = "A configurable sidebar-enabled Sphinx theme"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -16,7 +15,6 @@ files = [
 name = "appdirs"
 version = "1.4.4"
 description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
-category = "main"
 optional = false
 python-versions = "*"
 files = [
@@ -28,7 +26,6 @@ files = [
 name = "babel"
 version = "2.12.1"
 description = "Internationalization utilities"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -43,7 +40,6 @@ pytz = {version = ">=2015.7", markers = "python_version < \"3.9\""}
 name = "beautifulsoup4"
 version = "4.12.2"
 description = "Screen-scraping library"
-category = "dev"
 optional = false
 python-versions = ">=3.6.0"
 files = [
@@ -62,7 +58,6 @@ lxml = ["lxml"]
 name = "certifi"
 version = "2023.5.7"
 description = "Python package for providing Mozilla's CA Bundle."
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -74,7 +69,6 @@ files = [
 name = "charset-normalizer"
 version = "3.1.0"
 description = "The Real First Universal Charset Detector. Open, modern and actively maintained alternative to Chardet."
-category = "dev"
 optional = false
 python-versions = ">=3.7.0"
 files = [
@@ -159,7 +153,6 @@ files = [
 name = "codecov"
 version = "2.1.13"
 description = "Hosted coverage reports for GitHub, Bitbucket and Gitlab"
-category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 files = [
@@ -175,7 +168,6 @@ requests = ">=2.7.9"
 name = "colorama"
 version = "0.4.6"
 description = "Cross-platform colored terminal text."
-category = "dev"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,>=2.7"
 files = [
@@ -187,7 +179,6 @@ files = [
 name = "coverage"
 version = "7.2.6"
 description = "Code coverage measurement for Python"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -254,7 +245,6 @@ toml = ["tomli"]
 name = "docutils"
 version = "0.19"
 description = "Docutils -- Python Documentation Utilities"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -266,7 +256,6 @@ files = [
 name = "exceptiongroup"
 version = "1.1.1"
 description = "Backport of PEP 654 (exception groups)"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -281,7 +270,6 @@ test = ["pytest (>=6)"]
 name = "furo"
 version = "2023.3.27"
 description = "A clean customisable Sphinx documentation theme."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -299,7 +287,6 @@ sphinx-basic-ng = "*"
 name = "gp-libs"
 version = "0.0.1a17"
 description = "Internal utilities for projects following git-pull python package spec"
-category = "dev"
 optional = false
 python-versions = ">=3.7,<4.0"
 files = [
@@ -315,7 +302,6 @@ myst_parser = "*"
 name = "greenlet"
 version = "2.0.2"
 description = "Lightweight in-process concurrent programming"
-category = "main"
 optional = false
 python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
 files = [
@@ -389,7 +375,6 @@ test = ["objgraph", "psutil"]
 name = "idna"
 version = "3.4"
 description = "Internationalized Domain Names in Applications (IDNA)"
-category = "dev"
 optional = false
 python-versions = ">=3.5"
 files = [
@@ -401,7 +386,6 @@ files = [
 name = "imagesize"
 version = "1.4.1"
 description = "Getting image size from png/jpeg/jpeg2000/gif file"
-category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 files = [
@@ -413,7 +397,6 @@ files = [
 name = "importlib-metadata"
 version = "6.6.0"
 description = "Read metadata from Python packages"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -434,7 +417,6 @@ testing = ["flake8 (<5)", "flufl.flake8", "importlib-resources (>=1.3)", "packag
 name = "iniconfig"
 version = "2.0.0"
 description = "brain-dead simple config-ini parsing"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -446,7 +428,6 @@ files = [
 name = "jinja2"
 version = "3.1.2"
 description = "A very fast and expressive template engine."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -464,7 +445,6 @@ i18n = ["Babel (>=2.7)"]
 name = "livereload"
 version = "2.6.3"
 description = "Python LiveReload is an awesome tool for web developers"
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -480,7 +460,6 @@ tornado = {version = "*", markers = "python_version > \"2.7\""}
 name = "markdown-it-py"
 version = "2.2.0"
 description = "Python port of markdown-it. Markdown parsing, done right!"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -506,7 +485,6 @@ testing = ["coverage", "pytest", "pytest-cov", "pytest-regressions"]
 name = "markupsafe"
 version = "2.1.2"
 description = "Safely add untrusted strings to HTML/XML markup."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -566,7 +544,6 @@ files = [
 name = "mdit-py-plugins"
 version = "0.3.5"
 description = "Collection of plugins for markdown-it-py"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -586,7 +563,6 @@ testing = ["coverage", "pytest", "pytest-cov", "pytest-regressions"]
 name = "mdurl"
 version = "0.1.2"
 description = "Markdown URL utilities"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -598,7 +574,6 @@ files = [
 name = "mypy"
 version = "1.3.0"
 description = "Optional static typing for Python"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -646,7 +621,6 @@ reports = ["lxml"]
 name = "mypy-extensions"
 version = "1.0.0"
 description = "Type system extensions for programs checked with the mypy type checker."
-category = "dev"
 optional = false
 python-versions = ">=3.5"
 files = [
@@ -658,7 +632,6 @@ files = [
 name = "myst-parser"
 version = "1.0.0"
 description = "An extended [CommonMark](https://spec.commonmark.org/) compliant parser,"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -686,7 +659,6 @@ testing-docutils = ["pygments", "pytest (>=7,<8)", "pytest-param-files (>=0.3.4,
 name = "packaging"
 version = "23.1"
 description = "Core utilities for Python packages"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -698,7 +670,6 @@ files = [
 name = "pluggy"
 version = "1.0.0"
 description = "plugin and hook calling mechanisms for python"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -717,7 +688,6 @@ testing = ["pytest", "pytest-benchmark"]
 name = "pygments"
 version = "2.15.1"
 description = "Pygments is a syntax highlighting package written in Python."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -732,7 +702,6 @@ plugins = ["importlib-metadata"]
 name = "pytest"
 version = "7.3.1"
 description = "pytest: simple powerful testing with Python"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -756,7 +725,6 @@ testing = ["argcomplete", "attrs (>=19.2.0)", "hypothesis (>=3.56)", "mock", "no
 name = "pytest-cov"
 version = "4.1.0"
 description = "Pytest plugin for measuring coverage."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -775,7 +743,6 @@ testing = ["fields", "hunter", "process-tests", "pytest-xdist", "six", "virtuale
 name = "pytest-rerunfailures"
 version = "11.1.2"
 description = "pytest plugin to re-run tests to eliminate flaky failures"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -792,7 +759,6 @@ pytest = ">=5.3"
 name = "pytest-watcher"
 version = "0.2.6"
 description = "Continiously runs pytest on changes in *.py files"
-category = "dev"
 optional = false
 python-versions = ">=3.7.0,<4.0.0"
 files = [
@@ -807,7 +773,6 @@ watchdog = ">=2.0.0"
 name = "pytz"
 version = "2023.3"
 description = "World timezone definitions, modern and historical"
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -819,7 +784,6 @@ files = [
 name = "pyyaml"
 version = "6.0"
 description = "YAML parser and emitter for Python"
-category = "main"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -869,7 +833,6 @@ files = [
 name = "requests"
 version = "2.31.0"
 description = "Python HTTP for Humans."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -891,7 +854,6 @@ use-chardet-on-py3 = ["chardet (>=3.0.2,<6)"]
 name = "ruff"
 version = "0.0.270"
 description = "An extremely fast Python linter, written in Rust."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -918,7 +880,6 @@ files = [
 name = "six"
 version = "1.16.0"
 description = "Python 2 and 3 compatibility utilities"
-category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
 files = [
@@ -930,7 +891,6 @@ files = [
 name = "snowballstemmer"
 version = "2.2.0"
 description = "This package provides 29 stemmers for 28 languages generated from Snowball algorithms."
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -942,7 +902,6 @@ files = [
 name = "soupsieve"
 version = "2.4.1"
 description = "A modern CSS selector implementation for Beautiful Soup."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -954,7 +913,6 @@ files = [
 name = "sphinx"
 version = "5.3.0"
 description = "Python documentation generator"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -990,7 +948,6 @@ test = ["cython", "html5lib", "pytest (>=4.6)", "typed_ast"]
 name = "sphinx-autobuild"
 version = "2021.3.14"
 description = "Rebuild Sphinx documentation on changes, with live-reload in the browser."
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -1010,7 +967,6 @@ test = ["pytest", "pytest-cov"]
 name = "sphinx-autodoc-typehints"
 version = "1.23.0"
 description = "Type hints (PEP 484) support for the Sphinx autodoc extension"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1030,7 +986,6 @@ type-comment = ["typed-ast (>=1.5.4)"]
 name = "sphinx-basic-ng"
 version = "1.0.0b1"
 description = "A modern skeleton for Sphinx themes."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1048,7 +1003,6 @@ docs = ["furo", "ipython", "myst-parser", "sphinx-copybutton", "sphinx-inline-ta
 name = "sphinx-copybutton"
 version = "0.5.2"
 description = "Add a copy button to each of your code cells."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1067,7 +1021,6 @@ rtd = ["ipython", "myst-nb", "sphinx", "sphinx-book-theme", "sphinx-examples"]
 name = "sphinx-inline-tabs"
 version = "2021.3.28b7"
 description = "Add inline tabbed content to your Sphinx documentation."
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -1086,7 +1039,6 @@ test = ["pytest", "pytest-cov", "pytest-xdist"]
 name = "sphinxcontrib-applehelp"
 version = "1.0.2"
 description = "sphinxcontrib-applehelp is a sphinx extension which outputs Apple help books"
-category = "dev"
 optional = false
 python-versions = ">=3.5"
 files = [
@@ -1102,7 +1054,6 @@ test = ["pytest"]
 name = "sphinxcontrib-devhelp"
 version = "1.0.2"
 description = "sphinxcontrib-devhelp is a sphinx extension which outputs Devhelp document."
-category = "dev"
 optional = false
 python-versions = ">=3.5"
 files = [
@@ -1118,7 +1069,6 @@ test = ["pytest"]
 name = "sphinxcontrib-htmlhelp"
 version = "2.0.0"
 description = "sphinxcontrib-htmlhelp is a sphinx extension which renders HTML help files"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -1134,7 +1084,6 @@ test = ["html5lib", "pytest"]
 name = "sphinxcontrib-jsmath"
 version = "1.0.1"
 description = "A sphinx extension which renders display math in HTML via JavaScript"
-category = "dev"
 optional = false
 python-versions = ">=3.5"
 files = [
@@ -1149,7 +1098,6 @@ test = ["flake8", "mypy", "pytest"]
 name = "sphinxcontrib-qthelp"
 version = "1.0.3"
 description = "sphinxcontrib-qthelp is a sphinx extension which outputs QtHelp document."
-category = "dev"
 optional = false
 python-versions = ">=3.5"
 files = [
@@ -1165,7 +1113,6 @@ test = ["pytest"]
 name = "sphinxcontrib-serializinghtml"
 version = "1.1.5"
 description = "sphinxcontrib-serializinghtml is a sphinx extension which outputs \"serialized\" HTML files (json and pickle)."
-category = "dev"
 optional = false
 python-versions = ">=3.5"
 files = [
@@ -1181,7 +1128,6 @@ test = ["pytest"]
 name = "sphinxext-opengraph"
 version = "0.7.5"
 description = "Sphinx Extension to enable OGP support"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1196,7 +1142,6 @@ sphinx = ">=4.0"
 name = "sphinxext-rediraffe"
 version = "0.2.7"
 description = "Sphinx Extension that redirects non-existent pages to working pages."
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -1211,7 +1156,6 @@ sphinx = ">=2.0"
 name = "sqlalchemy"
 version = "1.4.48"
 description = "Database Abstraction Library"
-category = "main"
 optional = false
 python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,>=2.7"
 files = [
@@ -1259,7 +1203,7 @@ files = [
 ]
 
 [package.dependencies]
-greenlet = {version = "!=0.4.17", markers = "python_version >= \"3\" and platform_machine == \"aarch64\" or python_version >= \"3\" and platform_machine == \"ppc64le\" or python_version >= \"3\" and platform_machine == \"x86_64\" or python_version >= \"3\" and platform_machine == \"amd64\" or python_version >= \"3\" and platform_machine == \"AMD64\" or python_version >= \"3\" and platform_machine == \"win32\" or python_version >= \"3\" and platform_machine == \"WIN32\""}
+greenlet = {version = "!=0.4.17", markers = "python_version >= \"3\" and (platform_machine == \"win32\" or platform_machine == \"WIN32\" or platform_machine == \"AMD64\" or platform_machine == \"amd64\" or platform_machine == \"x86_64\" or platform_machine == \"ppc64le\" or platform_machine == \"aarch64\")"}
 importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
 
 [package.extras]
@@ -1287,7 +1231,6 @@ sqlcipher = ["sqlcipher3-binary"]
 name = "sqlalchemy-stubs"
 version = "0.4"
 description = "SQLAlchemy stubs and mypy plugin"
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -1303,7 +1246,6 @@ typing-extensions = ">=3.7.4"
 name = "tomli"
 version = "2.0.1"
 description = "A lil' TOML parser"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1315,7 +1257,6 @@ files = [
 name = "tornado"
 version = "6.2"
 description = "Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed."
-category = "dev"
 optional = false
 python-versions = ">= 3.7"
 files = [
@@ -1336,7 +1277,6 @@ files = [
 name = "typed-ast"
 version = "1.5.4"
 description = "a fork of Python 2 and 3 ast modules with type comment support"
-category = "dev"
 optional = false
 python-versions = ">=3.6"
 files = [
@@ -1370,7 +1310,6 @@ files = [
 name = "types-appdirs"
 version = "1.4.3.5"
 description = "Typing stubs for appdirs"
-category = "dev"
 optional = false
 python-versions = "*"
 files = [
@@ -1382,7 +1321,6 @@ files = [
 name = "typing-extensions"
 version = "4.6.2"
 description = "Backported and Experimental Type Hints for Python 3.7+"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1394,7 +1332,6 @@ files = [
 name = "unicodecsv"
 version = "0.14.1"
 description = "Python2's stdlib csv module is nice, but it doesn't support unicode. This module is a drop-in replacement which *does*."
-category = "main"
 optional = false
 python-versions = "*"
 files = [
@@ -1405,7 +1342,6 @@ files = [
 name = "unihan-etl"
 version = "0.18.2"
 description = "Export UNIHAN data of Chinese, Japanese, Korean to CSV, JSON or YAML"
-category = "main"
 optional = false
 python-versions = ">=3.7,<4.0"
 files = [
@@ -1423,7 +1359,6 @@ zhon = "*"
 name = "urllib3"
 version = "2.0.2"
 description = "HTTP library with thread-safe connection pooling, file post, and more."
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1441,7 +1376,6 @@ zstd = ["zstandard (>=0.18.0)"]
 name = "watchdog"
 version = "3.0.0"
 description = "Filesystem events monitoring"
-category = "dev"
 optional = false
 python-versions = ">=3.7"
 files = [
@@ -1481,7 +1415,6 @@ watchmedo = ["PyYAML (>=3.10)"]
 name = "zhon"
 version = "1.1.5"
 description = "Zhon provides constants used in Chinese text processing."
-category = "main"
 optional = false
 python-versions = "*"
 files = [
@@ -1492,7 +1425,6 @@ files = [
 name = "zipp"
 version = "3.15.0"
 description = "Backport of pathlib-compatible object wrapper for zip files"
-category = "main"
 optional = false
 python-versions = ">=3.7"
 files = [