diff --git a/poetry.lock b/poetry.lock
index 8063f57..3e8dfe2 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -20,6 +20,14 @@ six = "*"
 [package.extras]
 test = ["astroid (<=2.5.3)", "pytest"]
 
+[[package]]
+name = "atomicwrites"
+version = "1.4.1"
+description = "Atomic file writes."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
 [[package]]
 name = "attrs"
 version = "22.1.0"
@@ -242,17 +250,6 @@ category = "dev"
 optional = false
 python-versions = ">=3.6"
 
-[[package]]
-name = "exceptiongroup"
-version = "1.0.4"
-description = "Backport of PEP 654 (exception groups)"
-category = "dev"
-optional = false
-python-versions = ">=3.7"
-
-[package.extras]
-test = ["pytest (>=6)"]
-
 [[package]]
 name = "executing"
 version = "1.2.0"
@@ -693,23 +690,24 @@ python-versions = ">=3.7"
 
 [[package]]
 name = "pytest"
-version = "7.2.0"
+version = "6.2.5"
 description = "pytest: simple powerful testing with Python"
 category = "dev"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=3.6"
 
 [package.dependencies]
+atomicwrites = {version = ">=1.0", markers = "sys_platform == \"win32\""}
 attrs = ">=19.2.0"
 colorama = {version = "*", markers = "sys_platform == \"win32\""}
-exceptiongroup = {version = ">=1.0.0rc8", markers = "python_version < \"3.11\""}
 iniconfig = "*"
 packaging = "*"
 pluggy = ">=0.12,<2.0"
-tomli = {version = ">=1.0.0", markers = "python_version < \"3.11\""}
+py = ">=1.8.2"
+toml = "*"
 
 [package.extras]
-testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.7.2)", "requests", "xmlschema"]
+testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
 
 [[package]]
 name = "python-dateutil"
@@ -878,12 +876,12 @@ optional = false
 python-versions = "*"
 
 [[package]]
-name = "tomli"
-version = "2.0.1"
-description = "A lil' TOML parser"
+name = "toml"
+version = "0.10.2"
+description = "Python Library for Tom's Obvious, Minimal Language"
 category = "dev"
 optional = false
-python-versions = ">=3.7"
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
 [[package]]
 name = "tornado"
@@ -948,7 +946,7 @@ python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
 [metadata]
 lock-version = "1.1"
 python-versions = "~3.10"
-content-hash = "054f64747b6a14202dce3b46b5fe248c72a89c73f21b4ac5173c7d941b677578"
+content-hash = "b1192d1af8b3b239aa8e84a9eb04c530ff9dc9ca375337c338b06d4ff6d0d251"
 
 [metadata.files]
 appnope = [
@@ -959,6 +957,9 @@ asttokens = [
     {file = "asttokens-2.1.0-py2.py3-none-any.whl", hash = "sha256:1b28ed85e254b724439afc783d4bee767f780b936c3fe8b3275332f42cf5f561"},
     {file = "asttokens-2.1.0.tar.gz", hash = "sha256:4aa76401a151c8cc572d906aad7aea2a841780834a19d780f4321c0fe1b54635"},
 ]
+atomicwrites = [
+    {file = "atomicwrites-1.4.1.tar.gz", hash = "sha256:81b2c9071a49367a7f770170e5eec8cb66567cfbbc8c73d20ce5ca4a8d71cf11"},
+]
 attrs = [
     {file = "attrs-22.1.0-py2.py3-none-any.whl", hash = "sha256:86efa402f67bf2df34f51a335487cf46b1ec130d02b8d39fd248abfd30da551c"},
     {file = "attrs-22.1.0.tar.gz", hash = "sha256:29adc2665447e5191d0e7c568fde78b21f9672d344281d0c6e1ab085429b22b6"},
@@ -1154,10 +1155,6 @@ entrypoints = [
     {file = "entrypoints-0.4-py3-none-any.whl", hash = "sha256:f174b5ff827504fd3cd97cc3f8649f3693f51538c7e4bdf3ef002c8429d42f9f"},
     {file = "entrypoints-0.4.tar.gz", hash = "sha256:b706eddaa9218a19ebcd67b56818f05bb27589b1ca9e8d797b74affad4ccacd4"},
 ]
-exceptiongroup = [
-    {file = "exceptiongroup-1.0.4-py3-none-any.whl", hash = "sha256:542adf9dea4055530d6e1279602fa5cb11dab2395fa650b8674eaec35fc4a828"},
-    {file = "exceptiongroup-1.0.4.tar.gz", hash = "sha256:bd14967b79cd9bdb54d97323216f8fdf533e278df937aa2a90089e7d6e06e5ec"},
-]
 executing = [
     {file = "executing-1.2.0-py2.py3-none-any.whl", hash = "sha256:0314a69e37426e3608aada02473b4161d4caf5a4b244d1d0c48072b8fee7bacc"},
     {file = "executing-1.2.0.tar.gz", hash = "sha256:19da64c18d2d851112f09c287f8d3dbbdf725ab0e569077efb6cdcbd3497c107"},
@@ -1335,8 +1332,8 @@ pyrsistent = [
     {file = "pyrsistent-0.19.2.tar.gz", hash = "sha256:bfa0351be89c9fcbcb8c9879b826f4353be10f58f8a677efab0c017bf7137ec2"},
 ]
 pytest = [
-    {file = "pytest-7.2.0-py3-none-any.whl", hash = "sha256:892f933d339f068883b6fd5a459f03d85bfcb355e4981e146d2c7616c21fef71"},
-    {file = "pytest-7.2.0.tar.gz", hash = "sha256:c4014eb40e10f11f355ad4e3c2fb2c6c6d1919c73f3b5a433de4708202cade59"},
+    {file = "pytest-6.2.5-py3-none-any.whl", hash = "sha256:7310f8d27bc79ced999e760ca304d69f6ba6c6649c0b60fb0e04a4a77cacc134"},
+    {file = "pytest-6.2.5.tar.gz", hash = "sha256:131b36680866a76e6781d13f101efb86cf674ebb9762eb70d3082b6f29889e89"},
 ]
 python-dateutil = [
     {file = "python-dateutil-2.8.2.tar.gz", hash = "sha256:0123cacc1627ae19ddf3c27a5de5bd67ee4586fbdd6440d9748f8abb483d3e86"},
@@ -1500,9 +1497,9 @@ texttable = [
     {file = "texttable-1.6.4-py2.py3-none-any.whl", hash = "sha256:dd2b0eaebb2a9e167d1cefedab4700e5dcbdb076114eed30b58b97ed6b37d6f2"},
     {file = "texttable-1.6.4.tar.gz", hash = "sha256:42ee7b9e15f7b225747c3fa08f43c5d6c83bc899f80ff9bae9319334824076e9"},
 ]
-tomli = [
-    {file = "tomli-2.0.1-py3-none-any.whl", hash = "sha256:939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc"},
-    {file = "tomli-2.0.1.tar.gz", hash = "sha256:de526c12914f0c550d15924c62d72abc48d6fe7364aa87328337a31007fe8a4f"},
+toml = [
+    {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
+    {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
 ]
 tornado = [
     {file = "tornado-6.2-cp37-abi3-macosx_10_9_universal2.whl", hash = "sha256:20f638fd8cc85f3cbae3c732326e96addff0a15e22d80f049e00121651e82e72"},
diff --git a/pyproject.toml b/pyproject.toml
index 251ca4d..a11e81c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,7 @@ docker-compose = "1.29.2"
 funcy = "1.17"
 
 [tool.poetry.group.dev.dependencies]
-pytest = "^7.1.3"
+pytest = "^6.2.5"
 ipykernel = "^6.16.0"
 
 [tool.pytest.ini_options]