diff --git a/poetry.lock b/poetry.lock
index 1850fa9..1ff021e 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -51,7 +51,7 @@ python-versions = "*"
 
 [[package]]
 name = "astroid"
-version = "2.5.6"
+version = "2.6.1"
 description = "An abstract syntax tree for Python with inference support."
 category = "dev"
 optional = false
@@ -60,6 +60,7 @@ python-versions = "~=3.6"
 [package.dependencies]
 lazy-object-proxy = ">=1.4.0"
 typed-ast = {version = ">=1.4.0,<1.5", markers = "implementation_name == \"cpython\" and python_version < \"3.8\""}
+typing-extensions = {version = ">=3.7.4", markers = "python_version < \"3.8\""}
 wrapt = ">=1.11,<1.13"
 
 [[package]]
@@ -422,14 +423,14 @@ python-versions = ">=3.5"
 
 [[package]]
 name = "pylint"
-version = "2.8.3"
+version = "2.9.0"
 description = "python code static checker"
 category = "dev"
 optional = false
 python-versions = "~=3.6"
 
 [package.dependencies]
-astroid = "2.5.6"
+astroid = ">=2.6.1,<2.7"
 colorama = {version = "*", markers = "sys_platform == \"win32\""}
 isort = ">=4.2.5,<6"
 mccabe = ">=0.6,<0.7"
@@ -793,7 +794,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pyt
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6"
-content-hash = "1347b14cbfb52c4edc62302acfa53e8fdee06d217adad857dcc800ab3e40c046"
+content-hash = "3c3344db129ae494e6516cc18420888cd45bc4315f9d2f9eb341c96ff2711250"
 
 [metadata.files]
 alabaster = [
@@ -813,8 +814,8 @@ appdirs = [
     {file = "appdirs-1.4.4.tar.gz", hash = "sha256:7d5d0167b2b1ba821647616af46a749d1c653740dd0d2415100fe26e27afdf41"},
 ]
 astroid = [
-    {file = "astroid-2.5.6-py3-none-any.whl", hash = "sha256:4db03ab5fc3340cf619dbc25e42c2cc3755154ce6009469766d7143d1fc2ee4e"},
-    {file = "astroid-2.5.6.tar.gz", hash = "sha256:8a398dfce302c13f14bab13e2b14fe385d32b73f4e4853b9bdfb64598baa1975"},
+    {file = "astroid-2.6.1-py3-none-any.whl", hash = "sha256:54810a3639365ae98b1f03897e73918111acb3a494065b9970a822e940764fa4"},
+    {file = "astroid-2.6.1.tar.gz", hash = "sha256:19fd2d2e12bc3cae95687e8264b6593fe07339181a273eeb095da0e70faf4399"},
 ]
 atomicwrites = [
     {file = "atomicwrites-1.4.0-py2.py3-none-any.whl", hash = "sha256:6d1784dea7c0c8d4a5172b6c620f40b6e4cbfdf96d783691f2e1302a7b88e197"},
@@ -1070,8 +1071,8 @@ pygments = [
     {file = "Pygments-2.9.0.tar.gz", hash = "sha256:a18f47b506a429f6f4b9df81bb02beab9ca21d0a5fee38ed15aef65f0545519f"},
 ]
 pylint = [
-    {file = "pylint-2.8.3-py3-none-any.whl", hash = "sha256:792b38ff30903884e4a9eab814ee3523731abd3c463f3ba48d7b627e87013484"},
-    {file = "pylint-2.8.3.tar.gz", hash = "sha256:0a049c5d47b629d9070c3932d13bff482b12119b6a241a93bc460b0be16953c8"},
+    {file = "pylint-2.9.0-py3-none-any.whl", hash = "sha256:45b68315081027f1f8cbd20f870d23152ff94090487f022e7c32694a70954d65"},
+    {file = "pylint-2.9.0.tar.gz", hash = "sha256:697f69ec93ad6ec9cf0eecff54ac7e1fb836e1330807a2d077173de42b54cf14"},
 ]
 pyparsing = [
     {file = "pyparsing-2.4.7-py2.py3-none-any.whl", hash = "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"},
diff --git a/pyproject.toml b/pyproject.toml
index 23855b1..37f1965 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,7 @@ pytest = "^6.2"
 black = {version = "^20.8b1",allow-prereleases = true}
 pytest-cov = "^2.11.1"
 jsonschema = "^3.2.0"
-pylint = "^2.7.2"
+pylint = "^2.9.0"
 sphinx = "^3.5.3"
 sphinx-autoapi = "^1.8.1"
 sphinx-rtd-theme = "^0.5.2"