diff --git a/poetry.lock b/poetry.lock
index e3aa0e0e..335480cd 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -34,7 +34,7 @@ toml = ["toml"]
 
 [[package]]
 name = "distlib"
-version = "0.3.2"
+version = "0.3.3"
 description = "Distribution utilities"
 category = "dev"
 optional = false
@@ -42,11 +42,15 @@ python-versions = "*"
 
 [[package]]
 name = "filelock"
-version = "3.0.12"
+version = "3.1.0"
 description = "A platform independent file lock."
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
+
+[package.extras]
+docs = ["furo (>=2021.8.17b43)", "sphinx (>=4.1)", "sphinx-autodoc-typehints (>=1.12)"]
+testing = ["coverage (>=4)", "pytest (>=4)", "pytest-cov"]
 
 [[package]]
 name = "flake8"
@@ -98,7 +102,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 name = "mako"
 version = "1.1.5"
 description = "A super-fast templating language that borrows the  best ideas from the existing templating languages."
-category = "main"
+category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
@@ -113,7 +117,7 @@ lingua = ["lingua"]
 name = "markdown"
 version = "3.3.4"
 description = "Python implementation of Markdown."
-category = "main"
+category = "dev"
 optional = false
 python-versions = ">=3.6"
 
@@ -127,7 +131,7 @@ testing = ["coverage", "pyyaml"]
 name = "markupsafe"
 version = "2.0.1"
 description = "Safely add untrusted strings to HTML/XML markup."
-category = "main"
+category = "dev"
 optional = false
 python-versions = ">=3.6"
 
@@ -162,7 +166,7 @@ pyparsing = ">=2.0.2"
 name = "pdoc3"
 version = "0.10.0"
 description = "Auto-generate API documentation for Python projects."
-category = "main"
+category = "dev"
 optional = false
 python-versions = ">= 3.6"
 
@@ -172,7 +176,7 @@ markdown = ">=3.0"
 
 [[package]]
 name = "platformdirs"
-version = "2.3.0"
+version = "2.4.0"
 description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
 category = "dev"
 optional = false
@@ -286,7 +290,7 @@ python-versions = "*"
 
 [[package]]
 name = "virtualenv"
-version = "20.8.0"
+version = "20.8.1"
 description = "Virtual Python Environment builder"
 category = "dev"
 optional = false
@@ -320,7 +324,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6"
-content-hash = "2038c188015e6ae8acd844467b6ffd6a60d68256ee36c85f0b3f293c998802f3"
+content-hash = "c5b734f144e6943960455251426da0b4abc40bdeceab61197c728cff5dc7745c"
 
 [metadata.files]
 "backports.entry-points-selectable" = [
@@ -386,12 +390,12 @@ coverage = [
     {file = "coverage-5.5.tar.gz", hash = "sha256:ebe78fe9a0e874362175b02371bdfbee64d8edc42a044253ddf4ee7d3c15212c"},
 ]
 distlib = [
-    {file = "distlib-0.3.2-py2.py3-none-any.whl", hash = "sha256:23e223426b28491b1ced97dc3bbe183027419dfc7982b4fa2f05d5f3ff10711c"},
-    {file = "distlib-0.3.2.zip", hash = "sha256:106fef6dc37dd8c0e2c0a60d3fca3e77460a48907f335fa28420463a6f799736"},
+    {file = "distlib-0.3.3-py2.py3-none-any.whl", hash = "sha256:c8b54e8454e5bf6237cc84c20e8264c3e991e824ef27e8f1e81049867d861e31"},
+    {file = "distlib-0.3.3.zip", hash = "sha256:d982d0751ff6eaaab5e2ec8e691d949ee80eddf01a62eaa96ddb11531fe16b05"},
 ]
 filelock = [
-    {file = "filelock-3.0.12-py3-none-any.whl", hash = "sha256:929b7d63ec5b7d6b71b0fa5ac14e030b3f70b75747cef1b10da9b879fef15836"},
-    {file = "filelock-3.0.12.tar.gz", hash = "sha256:18d82244ee114f543149c66a6e0c14e9c4f8a1044b5cdaadd0f82159d6a6ff59"},
+    {file = "filelock-3.1.0-py2.py3-none-any.whl", hash = "sha256:d9e9c7d8191e915339843c81c90d3e44f7c84e5fb03bdc6b1b4d019025cf953b"},
+    {file = "filelock-3.1.0.tar.gz", hash = "sha256:78925788ce8c8945fac28a68c1d05cf33a6a6c4fba14fe02835122c53268ceef"},
 ]
 flake8 = [
     {file = "flake8-3.9.2-py2.py3-none-any.whl", hash = "sha256:bf8fd333346d844f616e8d47905ef3a3384edae6b4e9beb0c5101e25e3110907"},
@@ -485,8 +489,8 @@ pdoc3 = [
     {file = "pdoc3-0.10.0.tar.gz", hash = "sha256:5f22e7bcb969006738e1aa4219c75a32f34c2d62d46dc9d2fb2d3e0b0287e4b7"},
 ]
 platformdirs = [
-    {file = "platformdirs-2.3.0-py3-none-any.whl", hash = "sha256:8003ac87717ae2c7ee1ea5a84a1a61e87f3fbd16eb5aadba194ea30a9019f648"},
-    {file = "platformdirs-2.3.0.tar.gz", hash = "sha256:15b056538719b1c94bdaccb29e5f81879c7f7f0f4a153f46086d155dffcd4f0f"},
+    {file = "platformdirs-2.4.0-py3-none-any.whl", hash = "sha256:8868bbe3c3c80d42f20156f22e7131d2fb321f5bc86a2a345375c6481a67021d"},
+    {file = "platformdirs-2.4.0.tar.gz", hash = "sha256:367a5e80b3d04d2428ffa76d33f124cf11e8fff2acdaa9b43d545f5c7d661ef2"},
 ]
 pluggy = [
     {file = "pluggy-1.0.0-py2.py3-none-any.whl", hash = "sha256:74134bbf457f031a36d68416e1509f34bd5ccc019f0bcc952c7b909d06b37bd3"},
@@ -530,8 +534,8 @@ typing-extensions = [
     {file = "typing_extensions-3.10.0.2.tar.gz", hash = "sha256:49f75d16ff11f1cd258e1b988ccff82a3ca5570217d7ad8c5f48205dd99a677e"},
 ]
 virtualenv = [
-    {file = "virtualenv-20.8.0-py2.py3-none-any.whl", hash = "sha256:a4b987ec31c3c9996cf1bc865332f967fe4a0512c41b39652d6224f696e69da5"},
-    {file = "virtualenv-20.8.0.tar.gz", hash = "sha256:4da4ac43888e97de9cf4fdd870f48ed864bbfd133d2c46cbdec941fed4a25aef"},
+    {file = "virtualenv-20.8.1-py2.py3-none-any.whl", hash = "sha256:10062e34c204b5e4ec5f62e6ef2473f8ba76513a9a617e873f1f8fb4a519d300"},
+    {file = "virtualenv-20.8.1.tar.gz", hash = "sha256:bcc17f0b3a29670dd777d6f0755a4c04f28815395bca279cdcb213b97199a6b8"},
 ]
 zipp = [
     {file = "zipp-3.5.0-py3-none-any.whl", hash = "sha256:957cfda87797e389580cb8b9e3870841ca991e2125350677b2ca83a0e99390a3"},
diff --git a/pyproject.toml b/pyproject.toml
index 59c89035..5db85881 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,12 +43,12 @@ requirements_parser = "^0.2.0"
 setuptools = "^50.3.2"
 importlib-metadata = "^4.8.1"
 toml = "^0.10.2"
-pdoc3 = "^0.10.0"
 
 [tool.poetry.dev-dependencies]
 tox = "^3.24.3"
 coverage = "^5.5"
 flake8 = "^3.9.2"
+pdoc3 = "^0.10.0"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]