diff --git a/poetry.lock b/poetry.lock
index 9865157..5d116fa 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -221,7 +221,7 @@ python-versions = "*"
 
 [[package]]
 name = "mypy"
-version = "0.931"
+version = "0.961"
 description = "Optional static typing for Python"
 category = "dev"
 optional = false
@@ -229,13 +229,14 @@ python-versions = ">=3.6"
 
 [package.dependencies]
 mypy-extensions = ">=0.4.3"
-tomli = ">=1.1.0"
+tomli = {version = ">=1.1.0", markers = "python_version < \"3.11\""}
 typed-ast = {version = ">=1.4.0,<2", markers = "python_version < \"3.8\""}
 typing-extensions = ">=3.10"
 
 [package.extras]
 dmypy = ["psutil (>=4.0)"]
 python2 = ["typed-ast (>=1.4.0,<2)"]
+reports = ["lxml"]
 
 [[package]]
 name = "mypy-extensions"
@@ -473,7 +474,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6.2"
-content-hash = "70c579d9ed745cd29cfafc59dff4a632144ea31a367ce2c53af3b9cc51a4ebf0"
+content-hash = "8e89339659705a2a71be8684ef9ec2fa214bb45c0fc23422806292c28863d3b4"
 
 [metadata.files]
 atomicwrites = [
@@ -594,26 +595,29 @@ mccabe = [
     {file = "mccabe-0.6.1.tar.gz", hash = "sha256:dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f"},
 ]
 mypy = [
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-    {file = "mypy-0.931-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:c89702cac5b302f0c5d33b172d2b55b5df2bede3344a2fbed99ff96bddb2cf00"},
-    {file = "mypy-0.931-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:300717a07ad09525401a508ef5d105e6b56646f7942eb92715a1c8d610149714"},
-    {file = "mypy-0.931-cp310-cp310-win_amd64.whl", hash = "sha256:7b3f6f557ba4afc7f2ce6d3215d5db279bcf120b3cfd0add20a5d4f4abdae5bc"},
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-    {file = "mypy-0.931-cp36-cp36m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:4365c60266b95a3f216a3047f1d8e3f895da6c7402e9e1ddfab96393122cc58d"},
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-    {file = "mypy-0.931-cp38-cp38-win_amd64.whl", hash = "sha256:d9d2b84b2007cea426e327d2483238f040c49405a6bf4074f605f0156c91a47a"},
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-    {file = "mypy-0.931.tar.gz", hash = "sha256:0038b21890867793581e4cb0d810829f5fd4441aa75796b53033af3aa30430ce"},
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+    {file = "mypy-0.961-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:bdd5ca340beffb8c44cb9dc26697628d1b88c6bddf5c2f6eb308c46f269bb6f3"},
+    {file = "mypy-0.961-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:3e09f1f983a71d0672bbc97ae33ee3709d10c779beb613febc36805a6e28bb4e"},
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+    {file = "mypy-0.961-cp39-cp39-win_amd64.whl", hash = "sha256:1ece702f29270ec6af25db8cf6185c04c02311c6bb21a69f423d40e527b75c56"},
+    {file = "mypy-0.961-py3-none-any.whl", hash = "sha256:03c6cc893e7563e7b2949b969e63f02c000b32502a1b4d1314cabe391aa87d66"},
+    {file = "mypy-0.961.tar.gz", hash = "sha256:f730d56cb924d371c26b8eaddeea3cc07d78ff51c521c6d04899ac6904b75492"},
 ]
 mypy-extensions = [
     {file = "mypy_extensions-0.4.3-py2.py3-none-any.whl", hash = "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d"},
diff --git a/pyproject.toml b/pyproject.toml
index b937600..0f8d5d6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ typing-extensions = {version = "^4.0.1", extras = ["pep655"]}
 black = "^21.12b0"
 flake8 = "^4.0.1"
 isort = "^5.10.1"
-mypy = "^0.931"
+mypy = "^0.961"
 pre-commit = "^2.17.0"
 pytest = "^6.2.5"
 pytest-cov = "^3.0.0"