diff --git a/poetry.lock b/poetry.lock
index ec11792..f2a4946 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -23,8 +23,8 @@ gitpython = ">=3.0.5,<3.1.0"
 requests = "*"
 
 [package.extras]
+vagrant = ["fabric3", "python-vagrant", "docker (>=3.2.1,<3.3.0)"]
 docker = ["docker (>=3.2.1,<3.3.0)"]
-vagrant = ["docker (>=3.2.1,<3.3.0)", "python-vagrant", "fabric3"]
 
 [[package]]
 name = "arrow"
@@ -130,8 +130,8 @@ optional = false
 python-versions = ">=3.6"
 
 [package.extras]
-docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
-testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytest-cov", "pytest-enabler (>=1.0.1)", "mock", "lxml", "cssselect", "pytest-black (>=0.3.7)", "pytest-mypy", "importlib-resources"]
+testing = ["importlib-resources", "pytest-mypy", "pytest-black (>=0.3.7)", "cssselect", "lxml", "mock", "pytest-enabler (>=1.0.1)", "pytest-cov", "pytest-flake8", "pytest-checkdocs (>=2.4)", "pytest (>=4.6)"]
+docs = ["rst.linker (>=1.9)", "jaraco.packaging (>=8.2)", "sphinx"]
 
 [[package]]
 name = "decorator"
@@ -226,8 +226,8 @@ Jinja2 = ">=3.0"
 Werkzeug = ">=2.0"
 
 [package.extras]
-async = ["asgiref (>=3.2)"]
 dotenv = ["python-dotenv"]
+async = ["asgiref (>=3.2)"]
 
 [[package]]
 name = "frozen-flask"
@@ -252,7 +252,7 @@ python-versions = "*"
 python-dateutil = ">=2.8.1"
 
 [package.extras]
-dev = ["twine", "markdown", "flake8"]
+dev = ["twine", "markdown", "flake8", "wheel"]
 
 [[package]]
 name = "gitdb2"
@@ -455,7 +455,7 @@ tzdata = {version = "*", markers = "sys_platform == \"win32\""}
 Werkzeug = "*"
 
 [package.extras]
-dev = ["tox", "pytest"]
+dev = ["pytest", "tox"]
 
 [[package]]
 name = "naucse-render"
@@ -499,7 +499,7 @@ test = ["codecov", "coverage", "ipython", "ipykernel", "ipywidgets", "pytest (>=
 
 [[package]]
 name = "nbconvert"
-version = "6.1.0"
+version = "6.3.0"
 description = "Converting Jupyter Notebooks"
 category = "main"
 optional = false
@@ -521,11 +521,11 @@ testpath = "*"
 traitlets = ">=5.0"
 
 [package.extras]
-all = ["pytest", "pytest-cov", "pytest-dependency", "ipykernel", "ipywidgets (>=7)", "pyppeteer (==0.2.2)", "tornado (>=4.0)", "sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "ipython"]
+all = ["pytest", "pytest-cov", "pytest-dependency", "ipykernel", "ipywidgets (>=7)", "pyppeteer (==0.2.6)", "tornado (>=4.0)", "sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "ipython"]
 docs = ["sphinx (>=1.5.1)", "sphinx-rtd-theme", "nbsphinx (>=0.2.12)", "ipython"]
 serve = ["tornado (>=4.0)"]
-test = ["pytest", "pytest-cov", "pytest-dependency", "ipykernel", "ipywidgets (>=7)", "pyppeteer (==0.2.2)"]
-webpdf = ["pyppeteer (==0.2.2)"]
+test = ["pytest", "pytest-cov", "pytest-dependency", "ipykernel", "ipywidgets (>=7)", "pyppeteer (==0.2.6)"]
+webpdf = ["pyppeteer (==0.2.6)"]
 
 [[package]]
 name = "nbformat"
@@ -724,7 +724,7 @@ optional = false
 python-versions = ">= 3.5"
 
 [package.extras]
-test = ["pytest", "pathlib2"]
+test = ["pathlib2", "pytest"]
 
 [[package]]
 name = "tornado"
@@ -783,8 +783,8 @@ optional = false
 python-versions = ">=3.6"
 
 [package.extras]
-optional = ["python-socks", "wsaccel"]
 test = ["websockets"]
+optional = ["wsaccel", "python-socks"]
 
 [[package]]
 name = "werkzeug"
@@ -934,6 +934,7 @@ frozen-flask = [
 ]
 ghp-import = [
     {file = "ghp-import-2.0.1.tar.gz", hash = "sha256:753de2eace6e0f7d4edfb3cce5e3c3b98cd52aadb80163303d1d036bda7b4483"},
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 gitdb2 = [
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@@ -992,6 +993,8 @@ lxml = [
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@@ -1033,12 +1036,28 @@ lxml = [
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 ]
 markupsafe = [
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@@ -1047,14 +1066,27 @@ markupsafe = [
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     {file = "MarkupSafe-2.0.1.tar.gz", hash = "sha256:594c67807fb16238b30c44bdf74f36c02cdf22d1c8cda91ef8a0ed8dabf5620a"},
@@ -1083,8 +1121,8 @@ nbclient = [
     {file = "nbclient-0.5.4.tar.gz", hash = "sha256:6c8ad36a28edad4562580847f9f1636fe5316a51a323ed85a24a4ad37d4aefce"},
 ]
 nbconvert = [
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-    {file = "nbconvert-6.1.0.tar.gz", hash = "sha256:d22a8ff202644d31db254d24d52c3a96c82156623fcd7c7f987bba2612303ec9"},
+    {file = "nbconvert-6.3.0-py3-none-any.whl", hash = "sha256:8f23fbeabda4a500685d788ee091bf22cf34119304314304fb39f16e2fc32f37"},
+    {file = "nbconvert-6.3.0.tar.gz", hash = "sha256:5e77d6203854944520105e38f2563a813a4a3708e8563aa598928a3b5ee1081a"},
 ]
 nbformat = [
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