diff --git a/poetry.lock b/poetry.lock
index d922903..d706512 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -538,7 +538,7 @@ traitlets = "*"
 
 [[package]]
 name = "jupyterlab"
-version = "1.2.16"
+version = "1.2.21"
 description = "The JupyterLab notebook server extension."
 category = "dev"
 optional = false
@@ -742,14 +742,6 @@ traitlets = ">=4.2.1"
 docs = ["sphinx", "nbsphinx", "sphinxcontrib-github-alt"]
 test = ["nose", "coverage", "requests", "nose-warnings-filters", "nbval", "nose-exclude", "selenium", "pytest", "pytest-cov", "requests-unixsocket"]
 
-[[package]]
-name = "nut"
-version = "0.2.0"
-description = "Network utility... things like a UDP/TCP relay."
-category = "dev"
-optional = false
-python-versions = "*"
-
 [[package]]
 name = "packaging"
 version = "20.4"
@@ -1396,7 +1388,7 @@ multidict = ">=4.0"
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.8"
-content-hash = "4f2d518b002878fcdba15653efcc51f19f8f5f1824618c58919e20827412a150"
+content-hash = "c903f24d32e982df1c480b7a82e0ba16d1b3946cfbc89eff32fd2fe23b6db8b9"
 
 [metadata.files]
 appdirs = [
@@ -1426,6 +1418,10 @@ argon2-cffi = [
     {file = "argon2_cffi-20.1.0-cp38-cp38-win_amd64.whl", hash = "sha256:9dfd5197852530294ecb5795c97a823839258dfd5eb9420233c7cfedec2058f2"},
     {file = "argon2_cffi-20.1.0-cp39-cp39-win32.whl", hash = "sha256:e2db6e85c057c16d0bd3b4d2b04f270a7467c147381e8fd73cbbe5bc719832be"},
     {file = "argon2_cffi-20.1.0-cp39-cp39-win_amd64.whl", hash = "sha256:8a84934bd818e14a17943de8099d41160da4a336bcc699bb4c394bbb9b94bd32"},
+    {file = "argon2_cffi-20.1.0-pp36-pypy36_pp73-macosx_10_7_x86_64.whl", hash = "sha256:b94042e5dcaa5d08cf104a54bfae614be502c6f44c9c89ad1535b2ebdaacbd4c"},
+    {file = "argon2_cffi-20.1.0-pp36-pypy36_pp73-win32.whl", hash = "sha256:8282b84ceb46b5b75c3a882b28856b8cd7e647ac71995e71b6705ec06fc232c3"},
+    {file = "argon2_cffi-20.1.0-pp37-pypy37_pp73-macosx_10_7_x86_64.whl", hash = "sha256:3aa804c0e52f208973845e8b10c70d8957c9e5a666f702793256242e9167c4e0"},
+    {file = "argon2_cffi-20.1.0-pp37-pypy37_pp73-win_amd64.whl", hash = "sha256:36320372133a003374ef4275fbfce78b7ab581440dfca9f9471be3dd9a522428"},
 ]
 "aspy.yaml" = [
     {file = "aspy.yaml-1.3.0-py2.py3-none-any.whl", hash = "sha256:463372c043f70160a9ec950c3f1e4c3a82db5fca01d334b6bc89c7164d744bdc"},
@@ -1669,8 +1665,8 @@ jupyter-core = [
     {file = "jupyter_core-4.6.3.tar.gz", hash = "sha256:394fd5dd787e7c8861741880bdf8a00ce39f95de5d18e579c74b882522219e7e"},
 ]
 jupyterlab = [
-    {file = "jupyterlab-1.2.16-py2.py3-none-any.whl", hash = "sha256:959bacf4ef4e4bb1fe745f7aa5105e24470c352e5981a64f4cfbff8988dd4538"},
-    {file = "jupyterlab-1.2.16.tar.gz", hash = "sha256:9f0275bc2034c9c69945f7ea7ce6375ffaab4e1a6f03b04acebd3a8625f18186"},
+    {file = "jupyterlab-1.2.21-py2.py3-none-any.whl", hash = "sha256:67d83f56f5dcdfdcbacd94a00317ee0c7a57253001bdbba273ce7cd5a6c38680"},
+    {file = "jupyterlab-1.2.21.tar.gz", hash = "sha256:b07b19b7947dbe8b1cca1112223d236823fc9e1151beeac7ac8d0b74ed2ee5ee"},
 ]
 jupyterlab-server = [
     {file = "jupyterlab_server-1.1.5-py3-none-any.whl", hash = "sha256:ee62690778c90b07a62a9bc5e6f530eebe8cd7550a0ef0bd1363b1f2380e1797"},
@@ -1824,9 +1820,6 @@ notebook = [
     {file = "notebook-6.1.5-py3-none-any.whl", hash = "sha256:508cf9dad7cdb3188f1aa27017dc78179029dfe83814fc505329f689bc2ab50f"},
     {file = "notebook-6.1.5.tar.gz", hash = "sha256:3db37ae834c5f3b6378381229d0e5dfcbfb558d08c8ce646b1ad355147f5e91d"},
 ]
-nut = [
-    {file = "nut-0.2.0.tar.gz", hash = "sha256:427bd08d2b47d0c1c8f0a76783586df8b31c3427a0800d7930f010c06ff81e85"},
-]
 packaging = [
     {file = "packaging-20.4-py2.py3-none-any.whl", hash = "sha256:998416ba6962ae7fbd6596850b80e17859a5753ba17c32284f67bfff33784181"},
     {file = "packaging-20.4.tar.gz", hash = "sha256:4357f74f47b9c12db93624a82154e9b120fa8293699949152b22065d556079f8"},
diff --git a/pyproject.toml b/pyproject.toml
index 79d32df..ec39042 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ codecov = "^2.0.15"
 coverage = "^5.0.3"
 flake8 = "^3.7.9"
 flake8-black = "^0.1.1"
-jupyterlab = "^1.2.5"
+jupyterlab = "^1.2.21"
 mypy = "^0.761"
 pre-commit = "^1.21.0"
 pydocstyle = "^5.0.2"