diff --git a/requirements-dev.in b/requirements-dev.in
index 412c426..f9542a3 100644
--- a/requirements-dev.in
+++ b/requirements-dev.in
@@ -25,7 +25,7 @@ flake8-cognitive-complexity==0.1.0
 flake8-fine-pytest==1.0.3
 
 # mypy stuff
-mypy==0.971
+mypy==1.9.0
 types-PyYAML==6.0.12.12
 
 # pytest stuff
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 5ea24b5..36663ad 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -253,34 +253,38 @@ mr-proper==0.0.7 \
     --hash=sha256:03b517b19e617537f711ce418b125e5f2efd82ec881539cdee83195c78c14a02 \
     --hash=sha256:74a1b60240c46f10ba518707ef72811a01e5c270da0a78b5dd2dd923d99fdb14
     # via flake8-functions
-mypy==0.971 \
-    --hash=sha256:02ef476f6dcb86e6f502ae39a16b93285fef97e7f1ff22932b657d1ef1f28655 \
-    --hash=sha256:0d054ef16b071149917085f51f89555a576e2618d5d9dd70bd6eea6410af3ac9 \
-    --hash=sha256:19830b7dba7d5356d3e26e2427a2ec91c994cd92d983142cbd025ebe81d69cf3 \
-    --hash=sha256:1f7656b69974a6933e987ee8ffb951d836272d6c0f81d727f1d0e2696074d9e6 \
-    --hash=sha256:23488a14a83bca6e54402c2e6435467a4138785df93ec85aeff64c6170077fb0 \
-    --hash=sha256:23c7ff43fff4b0df93a186581885c8512bc50fc4d4910e0f838e35d6bb6b5e58 \
-    --hash=sha256:25c5750ba5609a0c7550b73a33deb314ecfb559c350bb050b655505e8aed4103 \
-    --hash=sha256:2ad53cf9c3adc43cf3bea0a7d01a2f2e86db9fe7596dfecb4496a5dda63cbb09 \
-    --hash=sha256:3fa7a477b9900be9b7dd4bab30a12759e5abe9586574ceb944bc29cddf8f0417 \
-    --hash=sha256:40b0f21484238269ae6a57200c807d80debc6459d444c0489a102d7c6a75fa56 \
-    --hash=sha256:4b21e5b1a70dfb972490035128f305c39bc4bc253f34e96a4adf9127cf943eb2 \
-    --hash=sha256:5a361d92635ad4ada1b1b2d3630fc2f53f2127d51cf2def9db83cba32e47c856 \
-    --hash=sha256:77a514ea15d3007d33a9e2157b0ba9c267496acf12a7f2b9b9f8446337aac5b0 \
-    --hash=sha256:855048b6feb6dfe09d3353466004490b1872887150c5bb5caad7838b57328cc8 \
-    --hash=sha256:9796a2ba7b4b538649caa5cecd398d873f4022ed2333ffde58eaf604c4d2cb27 \
-    --hash=sha256:98e02d56ebe93981c41211c05adb630d1d26c14195d04d95e49cd97dbc046dc5 \
-    --hash=sha256:b793b899f7cf563b1e7044a5c97361196b938e92f0a4343a5d27966a53d2ec71 \
-    --hash=sha256:d1ea5d12c8e2d266b5fb8c7a5d2e9c0219fedfeb493b7ed60cd350322384ac27 \
-    --hash=sha256:d2022bfadb7a5c2ef410d6a7c9763188afdb7f3533f22a0a32be10d571ee4bbe \
-    --hash=sha256:d3348e7eb2eea2472db611486846742d5d52d1290576de99d59edeb7cd4a42ca \
-    --hash=sha256:d744f72eb39f69312bc6c2abf8ff6656973120e2eb3f3ec4f758ed47e414a4bf \
-    --hash=sha256:ef943c72a786b0f8d90fd76e9b39ce81fb7171172daf84bf43eaf937e9f220a9 \
-    --hash=sha256:f2899a3cbd394da157194f913a931edfd4be5f274a88041c9dc2d9cdcb1c315c
-    # via -r requirements-dev.in
-mypy-extensions==0.4.3 \
-    --hash=sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d \
-    --hash=sha256:2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8
+mypy==1.9.0 \
+    --hash=sha256:0235391f1c6f6ce487b23b9dbd1327b4ec33bb93934aa986efe8a9563d9349e6 \
+    --hash=sha256:190da1ee69b427d7efa8aa0d5e5ccd67a4fb04038c380237a0d96829cb157913 \
+    --hash=sha256:2418488264eb41f69cc64a69a745fad4a8f86649af4b1041a4c64ee61fc61129 \
+    --hash=sha256:3a3c007ff3ee90f69cf0a15cbcdf0995749569b86b6d2f327af01fd1b8aee9dc \
+    --hash=sha256:3cc5da0127e6a478cddd906068496a97a7618a21ce9b54bde5bf7e539c7af974 \
+    --hash=sha256:48533cdd345c3c2e5ef48ba3b0d3880b257b423e7995dada04248725c6f77374 \
+    --hash=sha256:49c87c15aed320de9b438ae7b00c1ac91cd393c1b854c2ce538e2a72d55df150 \
+    --hash=sha256:4d3dbd346cfec7cb98e6cbb6e0f3c23618af826316188d587d1c1bc34f0ede03 \
+    --hash=sha256:571741dc4194b4f82d344b15e8837e8c5fcc462d66d076748142327626a1b6e9 \
+    --hash=sha256:587ce887f75dd9700252a3abbc9c97bbe165a4a630597845c61279cf32dfbf02 \
+    --hash=sha256:5d741d3fc7c4da608764073089e5f58ef6352bedc223ff58f2f038c2c4698a89 \
+    --hash=sha256:5e6061f44f2313b94f920e91b204ec600982961e07a17e0f6cd83371cb23f5c2 \
+    --hash=sha256:61758fabd58ce4b0720ae1e2fea5cfd4431591d6d590b197775329264f86311d \
+    --hash=sha256:653265f9a2784db65bfca694d1edd23093ce49740b2244cde583aeb134c008f3 \
+    --hash=sha256:68edad3dc7d70f2f17ae4c6c1b9471a56138ca22722487eebacfd1eb5321d612 \
+    --hash=sha256:81a10926e5473c5fc3da8abb04119a1f5811a236dc3a38d92015cb1e6ba4cb9e \
+    --hash=sha256:85ca5fcc24f0b4aeedc1d02f93707bccc04733f21d41c88334c5482219b1ccb3 \
+    --hash=sha256:a260627a570559181a9ea5de61ac6297aa5af202f06fd7ab093ce74e7181e43e \
+    --hash=sha256:aceb1db093b04db5cd390821464504111b8ec3e351eb85afd1433490163d60cd \
+    --hash=sha256:b685154e22e4e9199fc95f298661deea28aaede5ae16ccc8cbb1045e716b3e04 \
+    --hash=sha256:d357423fa57a489e8c47b7c85dfb96698caba13d66e086b412298a1a0ea3b0ed \
+    --hash=sha256:d4d5ddc13421ba3e2e082a6c2d74c2ddb3979c39b582dacd53dd5d9431237185 \
+    --hash=sha256:e49499be624dead83927e70c756970a0bc8240e9f769389cdf5714b0784ca6bf \
+    --hash=sha256:e54396d70be04b34f31d2edf3362c1edd023246c82f1730bbf8768c28db5361b \
+    --hash=sha256:f88566144752999351725ac623471661c9d1cd8caa0134ff98cceeea181789f4 \
+    --hash=sha256:f8a67616990062232ee4c3952f41c779afac41405806042a8126fe96e098419f \
+    --hash=sha256:fe28657de3bfec596bbeef01cb219833ad9d38dd5393fc649f4b366840baefe6
+    # via -r requirements-dev.in
+mypy-extensions==1.0.0 \
+    --hash=sha256:4392f6c0eb8a5668a69e23d168ffa70f0be9ccfd32b5cc2d26a34ae5b844552d \
+    --hash=sha256:75dbf8955dc00442a438fc4d0666508a9a97b6bd41aa2f0ffe9d2f2725af0782
     # via
     #   black
     #   mypy