diff --git a/poetry.lock b/poetry.lock
index 3e2281da..f72ae058 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -166,21 +166,21 @@ python-versions = "*"
 
 [[package]]
 name = "mypy"
-version = "0.910"
+version = "0.920"
 description = "Optional static typing for Python"
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.6"
 
 [package.dependencies]
 mypy-extensions = ">=0.4.3,<0.5.0"
-toml = "*"
-typed-ast = {version = ">=1.4.0,<1.5.0", markers = "python_version < \"3.8\""}
+tomli = ">=1.1.0,<3.0.0"
+typed-ast = {version = ">=1.4.0,<2", markers = "python_version < \"3.8\""}
 typing-extensions = ">=3.7.4"
 
 [package.extras]
 dmypy = ["psutil (>=4.0)"]
-python2 = ["typed-ast (>=1.4.0,<1.5.0)"]
+python2 = ["typed-ast (>=1.4.0,<2)"]
 
 [[package]]
 name = "mypy-extensions"
@@ -295,6 +295,14 @@ category = "main"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
+[[package]]
+name = "tomli"
+version = "1.2.3"
+description = "A lil' TOML parser"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
 [[package]]
 name = "tox"
 version = "3.24.4"
@@ -386,7 +394,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6"
-content-hash = "0dfa38dd83c813c7ceda9611a24ae25b03b9365e52b4c67c7574d00245e6baa1"
+content-hash = "8f2ad3759ab520fb0b2afe2baadfb2543449decba704276ed0a98d39265baff4"
 
 [metadata.files]
 attrs = [
@@ -487,29 +495,26 @@ mccabe = [
     {file = "mccabe-0.6.1.tar.gz", hash = "sha256:dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f"},
 ]
 mypy = [
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-    {file = "mypy-0.910-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:b94e4b785e304a04ea0828759172a15add27088520dc7e49ceade7834275bedb"},
-    {file = "mypy-0.910-cp35-cp35m-manylinux2010_x86_64.whl", hash = "sha256:088cd9c7904b4ad80bec811053272986611b84221835e079be5bcad029e79dd9"},
-    {file = "mypy-0.910-cp35-cp35m-win_amd64.whl", hash = "sha256:adaeee09bfde366d2c13fe6093a7df5df83c9a2ba98638c7d76b010694db760e"},
-    {file = "mypy-0.910-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:ecd2c3fe726758037234c93df7e98deb257fd15c24c9180dacf1ef829da5f921"},
-    {file = "mypy-0.910-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:d9dd839eb0dc1bbe866a288ba3c1afc33a202015d2ad83b31e875b5905a079b6"},
-    {file = "mypy-0.910-cp36-cp36m-manylinux2010_x86_64.whl", hash = "sha256:3e382b29f8e0ccf19a2df2b29a167591245df90c0b5a2542249873b5c1d78212"},
-    {file = "mypy-0.910-cp36-cp36m-win_amd64.whl", hash = "sha256:53fd2eb27a8ee2892614370896956af2ff61254c275aaee4c230ae771cadd885"},
-    {file = "mypy-0.910-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:b6fb13123aeef4a3abbcfd7e71773ff3ff1526a7d3dc538f3929a49b42be03f0"},
-    {file = "mypy-0.910-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:e4dab234478e3bd3ce83bac4193b2ecd9cf94e720ddd95ce69840273bf44f6de"},
-    {file = "mypy-0.910-cp37-cp37m-manylinux2010_x86_64.whl", hash = "sha256:7df1ead20c81371ccd6091fa3e2878559b5c4d4caadaf1a484cf88d93ca06703"},
-    {file = "mypy-0.910-cp37-cp37m-win_amd64.whl", hash = "sha256:0aadfb2d3935988ec3815952e44058a3100499f5be5b28c34ac9d79f002a4a9a"},
-    {file = "mypy-0.910-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:ec4e0cd079db280b6bdabdc807047ff3e199f334050db5cbb91ba3e959a67504"},
-    {file = "mypy-0.910-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:119bed3832d961f3a880787bf621634ba042cb8dc850a7429f643508eeac97b9"},
-    {file = "mypy-0.910-cp38-cp38-manylinux2010_x86_64.whl", hash = "sha256:866c41f28cee548475f146aa4d39a51cf3b6a84246969f3759cb3e9c742fc072"},
-    {file = "mypy-0.910-cp38-cp38-win_amd64.whl", hash = "sha256:ceb6e0a6e27fb364fb3853389607cf7eb3a126ad335790fa1e14ed02fba50811"},
-    {file = "mypy-0.910-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:1a85e280d4d217150ce8cb1a6dddffd14e753a4e0c3cf90baabb32cefa41b59e"},
-    {file = "mypy-0.910-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:42c266ced41b65ed40a282c575705325fa7991af370036d3f134518336636f5b"},
-    {file = "mypy-0.910-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:3c4b8ca36877fc75339253721f69603a9c7fdb5d4d5a95a1a1b899d8b86a4de2"},
-    {file = "mypy-0.910-cp39-cp39-manylinux2010_x86_64.whl", hash = "sha256:c0df2d30ed496a08de5daed2a9ea807d07c21ae0ab23acf541ab88c24b26ab97"},
-    {file = "mypy-0.910-cp39-cp39-win_amd64.whl", hash = "sha256:c6c2602dffb74867498f86e6129fd52a2770c48b7cd3ece77ada4fa38f94eba8"},
-    {file = "mypy-0.910-py3-none-any.whl", hash = "sha256:ef565033fa5a958e62796867b1df10c40263ea9ded87164d67572834e57a174d"},
-    {file = "mypy-0.910.tar.gz", hash = "sha256:704098302473cb31a218f1775a873b376b30b4c18229421e9e9dc8916fd16150"},
+    {file = "mypy-0.920-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:41f3575b20714171c832d8f6c7aaaa0d499c9a2d1b8adaaf837b4c9065c38540"},
+    {file = "mypy-0.920-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:431be889ffc8d9681813a45575c42e341c19467cbfa6dd09bf41467631feb530"},
+    {file = "mypy-0.920-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:f8b2059f73878e92eff7ed11a03515d6572f4338a882dd7547b5f7dd242118e6"},
+    {file = "mypy-0.920-cp310-cp310-win_amd64.whl", hash = "sha256:9cd316e9705555ca6a50670ba5fb0084d756d1d8cb1697c83820b1456b0bc5f3"},
+    {file = "mypy-0.920-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:e091fe58b4475b3504dc7c3022ff7f4af2f9e9ddf7182047111759ed0973bbde"},
+    {file = "mypy-0.920-cp36-cp36m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:98b4f91a75fed2e4c6339e9047aba95968d3a7c4b91e92ab9dc62c0c583564f4"},
+    {file = "mypy-0.920-cp36-cp36m-win_amd64.whl", hash = "sha256:562a0e335222d5bbf5162b554c3afe3745b495d67c7fe6f8b0d1b5bace0c1eeb"},
+    {file = "mypy-0.920-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:618e677aabd21f30670bffb39a885a967337f5b112c6fb7c79375e6dced605d6"},
+    {file = "mypy-0.920-cp37-cp37m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:40cb062f1b7ff4cd6e897a89d8ddc48c6ad7f326b5277c93a8c559564cc1551c"},
+    {file = "mypy-0.920-cp37-cp37m-win_amd64.whl", hash = "sha256:69b5a835b12fdbfeed84ef31152d41343d32ccb2b345256d8682324409164330"},
+    {file = "mypy-0.920-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:993c2e52ea9570e6e872296c046c946377b9f5e89eeb7afea2a1524cf6e50b27"},
+    {file = "mypy-0.920-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:df0fec878ccfcb2d1d2306ba31aa757848f681e7bbed443318d9bbd4b0d0fe9a"},
+    {file = "mypy-0.920-cp38-cp38-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:331a81d2c9bf1be25317260a073b41f4584cd11701a7c14facef0aa5a005e843"},
+    {file = "mypy-0.920-cp38-cp38-win_amd64.whl", hash = "sha256:ffb1e57ec49a30e3c0ebcfdc910ae4aceb7afb649310b7355509df6b15bd75f6"},
+    {file = "mypy-0.920-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:31895b0b3060baf15bf76e789d94722c026f673b34b774bba9e8772295edccff"},
+    {file = "mypy-0.920-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:140174e872d20d4768124a089b9f9fc83abd6a349b7f8cc6276bc344eb598922"},
+    {file = "mypy-0.920-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:13b3c110309b53f5a62aa1b360f598124be33a42563b790a2a9efaacac99f1fc"},
+    {file = "mypy-0.920-cp39-cp39-win_amd64.whl", hash = "sha256:82e6c15675264e923b60a11d6eb8f90665504352e68edfbb4a79aac7a04caddd"},
+    {file = "mypy-0.920-py3-none-any.whl", hash = "sha256:71c77bd885d2ce44900731d4652d0d1c174dc66a0f11200e0c680bdedf1a6b37"},
+    {file = "mypy-0.920.tar.gz", hash = "sha256:a55438627f5f546192f13255a994d6d1cf2659df48adcf966132b4379fd9c86b"},
 ]
 mypy-extensions = [
     {file = "mypy_extensions-0.4.3-py2.py3-none-any.whl", hash = "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d"},
@@ -559,6 +564,10 @@ toml = [
     {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
     {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
 ]
+tomli = [
+    {file = "tomli-1.2.3-py3-none-any.whl", hash = "sha256:e3069e4be3ead9668e21cb9b074cd948f7b3113fd9c8bba083f48247aab8b11c"},
+    {file = "tomli-1.2.3.tar.gz", hash = "sha256:05b6166bff487dc068d322585c7ea4ef78deed501cc124060e0f238e89a9231f"},
+]
 tox = [
     {file = "tox-3.24.4-py2.py3-none-any.whl", hash = "sha256:5e274227a53dc9ef856767c21867377ba395992549f02ce55eb549f9fb9a8d10"},
     {file = "tox-3.24.4.tar.gz", hash = "sha256:c30b57fa2477f1fb7c36aa1d83292d5c2336cd0018119e1b1c17340e2c2708ca"},
diff --git a/pyproject.toml b/pyproject.toml
index 2ec2502a..feb0b8aa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ cyclonedx-python-lib = "^0.11"
 tox = "^3.24.3"
 coverage = "^6.1"
 flake8 = "^3.9.2"
-mypy = "^0.910"
+mypy = "^0.920"
 flake8-annotations = "^2.0"
 flake8-bugbear = "^21.9.2"