diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index a695b77..f0c392b 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -37,3 +37,6 @@ jobs:
     - name: Test with pytest
       run: |
         poetry run pytest
+    - name: Test with mypy
+      run: |
+        poetry run mypy src/
diff --git a/PKGBUILD b/PKGBUILD
index 250524f..c7e99f7 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -3,15 +3,15 @@
 
 pkgname=amdfan
 pkgdesc="Python daemon for controlling the fans on amdgpu cards"
-pkgver=0.1.12
+pkgver=0.1.13
 pkgrel=1
 arch=('any')
 license=('GPL2')
 depends=('python' 'python-yaml' 'python-numpy' 'python-rich' 'python-click')
 makedepends=('python-setuptools')
 url="https://github.com/mcgillij/amdfan"
-source=("https://github.com/mcgillij/amdfan/releases/download/0.1.12/amdfan-0.1.12.tar.gz")
-md5sums=('f83ef18f1af4ac8eede0d6dc3211356b')
+source=("https://github.com/mcgillij/amdfan/releases/download/0.1.13/amdfan-0.1.13.tar.gz")
+md5sums=('6317e5c964d0965fc73bc4ab8b2945df')
 
 build() {
   cd "$srcdir/$pkgname-$pkgver"
diff --git a/poetry.lock b/poetry.lock
index 3c27b98..058edb0 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -109,6 +109,17 @@ mccabe = ">=0.6.0,<0.7.0"
 pycodestyle = ">=2.7.0,<2.8.0"
 pyflakes = ">=2.3.0,<2.4.0"
 
+[[package]]
+name = "greenlet"
+version = "1.1.2"
+description = "Lightweight in-process concurrent programming"
+category = "dev"
+optional = false
+python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
+
+[package.extras]
+docs = ["sphinx"]
+
 [[package]]
 name = "importlib-metadata"
 version = "4.8.1"
@@ -164,6 +175,32 @@ category = "dev"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "msgpack"
+version = "1.0.2"
+description = "MessagePack (de)serializer."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "mypy"
+version = "0.910"
+description = "Optional static typing for Python"
+category = "dev"
+optional = false
+python-versions = ">=3.5"
+
+[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\""}
+typing-extensions = ">=3.7.4"
+
+[package.extras]
+dmypy = ["psutil (>=4.0)"]
+python2 = ["typed-ast (>=1.4.0,<1.5.0)"]
+
 [[package]]
 name = "mypy-extensions"
 version = "0.4.3"
@@ -172,6 +209,17 @@ category = "dev"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "neovim"
+version = "0.3.1"
+description = "Transition packgage for pynvim"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+pynvim = ">=0.3.1"
+
 [[package]]
 name = "numpy"
 version = "1.21.1"
@@ -275,6 +323,22 @@ platformdirs = ">=2.2.0"
 toml = ">=0.7.1"
 typing-extensions = {version = ">=3.10.0", markers = "python_version < \"3.10\""}
 
+[[package]]
+name = "pynvim"
+version = "0.4.3"
+description = "Python client to neovim"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+greenlet = "*"
+msgpack = ">=0.5.0"
+
+[package.extras]
+pyuv = ["pyuv (>=1.0.0)"]
+test = ["pytest (>=3.4.0)"]
+
 [[package]]
 name = "pyparsing"
 version = "2.4.7"
@@ -354,6 +418,14 @@ category = "dev"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "types-pyyaml"
+version = "6.0.0"
+description = "Typing stubs for PyYAML"
+category = "dev"
+optional = false
+python-versions = "*"
+
 [[package]]
 name = "typing-extensions"
 version = "3.10.0.2"
@@ -385,7 +457,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7 || ^3.8 || ^3.9"
-content-hash = "1cfb8bfa42b8117b964c502e79092c0ba9830a75a3dfffe1b3fc4c8199f94e2f"
+content-hash = "585d3e220e69ae840ebcfb6204e9280de6c39143730c38ea3c12ab7f4cf9f3c6"
 
 [metadata.files]
 appdirs = [
@@ -423,6 +495,58 @@ flake8 = [
     {file = "flake8-3.9.2-py2.py3-none-any.whl", hash = "sha256:bf8fd333346d844f616e8d47905ef3a3384edae6b4e9beb0c5101e25e3110907"},
     {file = "flake8-3.9.2.tar.gz", hash = "sha256:07528381786f2a6237b061f6e96610a4167b226cb926e2aa2b6b1d78057c576b"},
 ]
+greenlet = [
+    {file = "greenlet-1.1.2-cp27-cp27m-macosx_10_14_x86_64.whl", hash = "sha256:58df5c2a0e293bf665a51f8a100d3e9956febfbf1d9aaf8c0677cf70218910c6"},
+    {file = "greenlet-1.1.2-cp27-cp27m-manylinux1_x86_64.whl", hash = "sha256:aec52725173bd3a7b56fe91bc56eccb26fbdff1386ef123abb63c84c5b43b63a"},
+    {file = "greenlet-1.1.2-cp27-cp27m-manylinux2010_x86_64.whl", hash = "sha256:833e1551925ed51e6b44c800e71e77dacd7e49181fdc9ac9a0bf3714d515785d"},
+    {file = "greenlet-1.1.2-cp27-cp27m-win32.whl", hash = "sha256:aa5b467f15e78b82257319aebc78dd2915e4c1436c3c0d1ad6f53e47ba6e2713"},
+    {file = "greenlet-1.1.2-cp27-cp27m-win_amd64.whl", hash = "sha256:40b951f601af999a8bf2ce8c71e8aaa4e8c6f78ff8afae7b808aae2dc50d4c40"},
+    {file = "greenlet-1.1.2-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:95e69877983ea39b7303570fa6760f81a3eec23d0e3ab2021b7144b94d06202d"},
+    {file = "greenlet-1.1.2-cp27-cp27mu-manylinux2010_x86_64.whl", hash = "sha256:356b3576ad078c89a6107caa9c50cc14e98e3a6c4874a37c3e0273e4baf33de8"},
+    {file = "greenlet-1.1.2-cp310-cp310-macosx_10_14_x86_64.whl", hash = "sha256:8639cadfda96737427330a094476d4c7a56ac03de7265622fcf4cfe57c8ae18d"},
+    {file = "greenlet-1.1.2-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:97e5306482182170ade15c4b0d8386ded995a07d7cc2ca8f27958d34d6736497"},
+    {file = "greenlet-1.1.2-cp310-cp310-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl", hash = "sha256:e6a36bb9474218c7a5b27ae476035497a6990e21d04c279884eb10d9b290f1b1"},
+    {file = "greenlet-1.1.2-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:abb7a75ed8b968f3061327c433a0fbd17b729947b400747c334a9c29a9af6c58"},
+    {file = "greenlet-1.1.2-cp310-cp310-win_amd64.whl", hash = "sha256:14d4f3cd4e8b524ae9b8aa567858beed70c392fdec26dbdb0a8a418392e71708"},
+    {file = "greenlet-1.1.2-cp35-cp35m-macosx_10_14_x86_64.whl", hash = "sha256:17ff94e7a83aa8671a25bf5b59326ec26da379ace2ebc4411d690d80a7fbcf23"},
+    {file = "greenlet-1.1.2-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:9f3cba480d3deb69f6ee2c1825060177a22c7826431458c697df88e6aeb3caee"},
+    {file = "greenlet-1.1.2-cp35-cp35m-manylinux2010_x86_64.whl", hash = "sha256:fa877ca7f6b48054f847b61d6fa7bed5cebb663ebc55e018fda12db09dcc664c"},
+    {file = "greenlet-1.1.2-cp35-cp35m-win32.whl", hash = "sha256:7cbd7574ce8e138bda9df4efc6bf2ab8572c9aff640d8ecfece1b006b68da963"},
+    {file = "greenlet-1.1.2-cp35-cp35m-win_amd64.whl", hash = "sha256:903bbd302a2378f984aef528f76d4c9b1748f318fe1294961c072bdc7f2ffa3e"},
+    {file = "greenlet-1.1.2-cp36-cp36m-macosx_10_14_x86_64.whl", hash = "sha256:049fe7579230e44daef03a259faa24511d10ebfa44f69411d99e6a184fe68073"},
+    {file = "greenlet-1.1.2-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:dd0b1e9e891f69e7675ba5c92e28b90eaa045f6ab134ffe70b52e948aa175b3c"},
+    {file = "greenlet-1.1.2-cp36-cp36m-manylinux2010_x86_64.whl", hash = "sha256:7418b6bfc7fe3331541b84bb2141c9baf1ec7132a7ecd9f375912eca810e714e"},
+    {file = "greenlet-1.1.2-cp36-cp36m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:f9d29ca8a77117315101425ec7ec2a47a22ccf59f5593378fc4077ac5b754fce"},
+    {file = "greenlet-1.1.2-cp36-cp36m-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl", hash = "sha256:21915eb821a6b3d9d8eefdaf57d6c345b970ad722f856cd71739493ce003ad08"},
+    {file = "greenlet-1.1.2-cp36-cp36m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:eff9d20417ff9dcb0d25e2defc2574d10b491bf2e693b4e491914738b7908168"},
+    {file = "greenlet-1.1.2-cp36-cp36m-win32.whl", hash = "sha256:32ca72bbc673adbcfecb935bb3fb1b74e663d10a4b241aaa2f5a75fe1d1f90aa"},
+    {file = "greenlet-1.1.2-cp36-cp36m-win_amd64.whl", hash = "sha256:f0214eb2a23b85528310dad848ad2ac58e735612929c8072f6093f3585fd342d"},
+    {file = "greenlet-1.1.2-cp37-cp37m-macosx_10_14_x86_64.whl", hash = "sha256:b92e29e58bef6d9cfd340c72b04d74c4b4e9f70c9fa7c78b674d1fec18896dc4"},
+    {file = "greenlet-1.1.2-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:fdcec0b8399108577ec290f55551d926d9a1fa6cad45882093a7a07ac5ec147b"},
+    {file = "greenlet-1.1.2-cp37-cp37m-manylinux2010_x86_64.whl", hash = "sha256:93f81b134a165cc17123626ab8da2e30c0455441d4ab5576eed73a64c025b25c"},
+    {file = "greenlet-1.1.2-cp37-cp37m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:1e12bdc622676ce47ae9abbf455c189e442afdde8818d9da983085df6312e7a1"},
+    {file = "greenlet-1.1.2-cp37-cp37m-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl", hash = "sha256:8c790abda465726cfb8bb08bd4ca9a5d0a7bd77c7ac1ca1b839ad823b948ea28"},
+    {file = "greenlet-1.1.2-cp37-cp37m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:f276df9830dba7a333544bd41070e8175762a7ac20350786b322b714b0e654f5"},
+    {file = "greenlet-1.1.2-cp37-cp37m-win32.whl", hash = "sha256:64e6175c2e53195278d7388c454e0b30997573f3f4bd63697f88d855f7a6a1fc"},
+    {file = "greenlet-1.1.2-cp37-cp37m-win_amd64.whl", hash = "sha256:b11548073a2213d950c3f671aa88e6f83cda6e2fb97a8b6317b1b5b33d850e06"},
+    {file = "greenlet-1.1.2-cp38-cp38-macosx_10_14_x86_64.whl", hash = "sha256:9633b3034d3d901f0a46b7939f8c4d64427dfba6bbc5a36b1a67364cf148a1b0"},
+    {file = "greenlet-1.1.2-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:eb6ea6da4c787111adf40f697b4e58732ee0942b5d3bd8f435277643329ba627"},
+    {file = "greenlet-1.1.2-cp38-cp38-manylinux2010_x86_64.whl", hash = "sha256:f3acda1924472472ddd60c29e5b9db0cec629fbe3c5c5accb74d6d6d14773478"},
+    {file = "greenlet-1.1.2-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:e859fcb4cbe93504ea18008d1df98dee4f7766db66c435e4882ab35cf70cac43"},
+    {file = "greenlet-1.1.2-cp38-cp38-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl", hash = "sha256:00e44c8afdbe5467e4f7b5851be223be68adb4272f44696ee71fe46b7036a711"},
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+    {file = "greenlet-1.1.2-cp38-cp38-win_amd64.whl", hash = "sha256:8d2f1fb53a421b410751887eb4ff21386d119ef9cde3797bf5e7ed49fb51a3b3"},
+    {file = "greenlet-1.1.2-cp39-cp39-macosx_10_14_x86_64.whl", hash = "sha256:166eac03e48784a6a6e0e5f041cfebb1ab400b394db188c48b3a84737f505b67"},
+    {file = "greenlet-1.1.2-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:572e1787d1460da79590bf44304abbc0a2da944ea64ec549188fa84d89bba7ab"},
+    {file = "greenlet-1.1.2-cp39-cp39-manylinux2010_x86_64.whl", hash = "sha256:be5f425ff1f5f4b3c1e33ad64ab994eed12fc284a6ea71c5243fd564502ecbe5"},
+    {file = "greenlet-1.1.2-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:b1692f7d6bc45e3200844be0dba153612103db241691088626a33ff1f24a0d88"},
+    {file = "greenlet-1.1.2-cp39-cp39-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl", hash = "sha256:7227b47e73dedaa513cdebb98469705ef0d66eb5a1250144468e9c3097d6b59b"},
+    {file = "greenlet-1.1.2-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:7ff61ff178250f9bb3cd89752df0f1dd0e27316a8bd1465351652b1b4a4cdfd3"},
+    {file = "greenlet-1.1.2-cp39-cp39-win32.whl", hash = "sha256:f70a9e237bb792c7cc7e44c531fd48f5897961701cdaa06cf22fc14965c496cf"},
+    {file = "greenlet-1.1.2-cp39-cp39-win_amd64.whl", hash = "sha256:013d61294b6cd8fe3242932c1c5e36e5d1db2c8afb58606c5a67efce62c1f5fd"},
+    {file = "greenlet-1.1.2.tar.gz", hash = "sha256:e30f5ea4ae2346e62cedde8794a56858a67b878dd79f7df76a0767e356b1744a"},
+]
 importlib-metadata = [
     {file = "importlib_metadata-4.8.1-py3-none-any.whl", hash = "sha256:b618b6d2d5ffa2f16add5697cf57a46c76a56229b0ed1c438322e4e95645bd15"},
     {file = "importlib_metadata-4.8.1.tar.gz", hash = "sha256:f284b3e11256ad1e5d03ab86bb2ccd6f5339688ff17a4d797a0fe7df326f23b1"},
@@ -463,10 +587,68 @@ mccabe = [
     {file = "mccabe-0.6.1-py2.py3-none-any.whl", hash = "sha256:ab8a6258860da4b6677da4bd2fe5dc2c659cff31b3ee4f7f5d64e79735b80d42"},
     {file = "mccabe-0.6.1.tar.gz", hash = "sha256:dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f"},
 ]
+msgpack = [
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+    {file = "msgpack-1.0.2-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:a99b144475230982aee16b3d249170f1cccebf27fb0a08e9f603b69637a62192"},
+    {file = "msgpack-1.0.2-cp35-cp35m-manylinux2014_aarch64.whl", hash = "sha256:1026dcc10537d27dd2d26c327e552f05ce148977e9d7b9f1718748281b38c841"},
+    {file = "msgpack-1.0.2-cp36-cp36m-macosx_10_14_x86_64.whl", hash = "sha256:fe07bc6735d08e492a327f496b7850e98cb4d112c56df69b0c844dbebcbb47f6"},
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+    {file = "msgpack-1.0.2-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:26a1759f1a88df5f1d0b393eb582ec022326994e311ba9c5818adc5374736439"},
+    {file = "msgpack-1.0.2-cp36-cp36m-manylinux2014_aarch64.whl", hash = "sha256:497d2c12426adcd27ab83144057a705efb6acc7e85957a51d43cdcf7f258900f"},
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+    {file = "msgpack-1.0.2-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:b55f7db883530b74c857e50e149126b91bb75d35c08b28db12dcb0346f15e46e"},
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+    {file = "msgpack-1.0.2-cp38-cp38-win32.whl", hash = "sha256:0cb94ee48675a45d3b86e61d13c1e6f1696f0183f0715544976356ff86f741d9"},
+    {file = "msgpack-1.0.2-cp38-cp38-win_amd64.whl", hash = "sha256:e36a812ef4705a291cdb4a2fd352f013134f26c6ff63477f20235138d1d21009"},
+    {file = "msgpack-1.0.2-cp39-cp39-macosx_10_14_x86_64.whl", hash = "sha256:2a5866bdc88d77f6e1370f82f2371c9bc6fc92fe898fa2dec0c5d4f5435a2694"},
+    {file = "msgpack-1.0.2-cp39-cp39-manylinux1_i686.whl", hash = "sha256:92be4b12de4806d3c36810b0fe2aeedd8d493db39e2eb90742b9c09299eb5759"},
+    {file = "msgpack-1.0.2-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:de6bd7990a2c2dabe926b7e62a92886ccbf809425c347ae7de277067f97c2887"},
+    {file = "msgpack-1.0.2-cp39-cp39-manylinux2014_aarch64.whl", hash = "sha256:5a9ee2540c78659a1dd0b110f73773533ee3108d4e1219b5a15a8d635b7aca0e"},
+    {file = "msgpack-1.0.2-cp39-cp39-win32.whl", hash = "sha256:c747c0cc08bd6d72a586310bda6ea72eeb28e7505990f342552315b229a19b33"},
+    {file = "msgpack-1.0.2-cp39-cp39-win_amd64.whl", hash = "sha256:d8167b84af26654c1124857d71650404336f4eb5cc06900667a493fc619ddd9f"},
+    {file = "msgpack-1.0.2.tar.gz", hash = "sha256:fae04496f5bc150eefad4e9571d1a76c55d021325dcd484ce45065ebbdd00984"},
+]
+mypy = [
+    {file = "mypy-0.910-cp35-cp35m-macosx_10_9_x86_64.whl", hash = "sha256:a155d80ea6cee511a3694b108c4494a39f42de11ee4e61e72bc424c490e46457"},
+    {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"},
+]
 mypy-extensions = [
     {file = "mypy_extensions-0.4.3-py2.py3-none-any.whl", hash = "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d"},
     {file = "mypy_extensions-0.4.3.tar.gz", hash = "sha256:2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8"},
 ]
+neovim = [
+    {file = "neovim-0.3.1.tar.gz", hash = "sha256:a6a0e7a5b4433bf4e6ddcbc5c5ff44170be7d84259d002b8e8d8fb4ee78af60f"},
+]
 numpy = [
     {file = "numpy-1.21.1-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:38e8648f9449a549a7dfe8d8755a5979b45b3538520d1e735637ef28e8c2dc50"},
     {file = "numpy-1.21.1-cp37-cp37m-manylinux_2_12_i686.manylinux2010_i686.whl", hash = "sha256:fd7d7409fa643a91d0a05c7554dd68aa9c9bb16e186f6ccfe40d6e003156e33a"},
@@ -533,6 +715,9 @@ pylint = [
     {file = "pylint-2.11.1-py3-none-any.whl", hash = "sha256:0f358e221c45cbd4dad2a1e4b883e75d28acdcccd29d40c76eb72b307269b126"},
     {file = "pylint-2.11.1.tar.gz", hash = "sha256:2c9843fff1a88ca0ad98a256806c82c5a8f86086e7ccbdb93297d86c3f90c436"},
 ]
+pynvim = [
+    {file = "pynvim-0.4.3.tar.gz", hash = "sha256:3a795378bde5e8092fbeb3a1a99be9c613d2685542f1db0e5c6fd467eed56dff"},
+]
 pyparsing = [
     {file = "pyparsing-2.4.7-py2.py3-none-any.whl", hash = "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"},
     {file = "pyparsing-2.4.7.tar.gz", hash = "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1"},
@@ -661,6 +846,10 @@ typed-ast = [
     {file = "typed_ast-1.4.3-cp39-cp39-win_amd64.whl", hash = "sha256:9c6d1a54552b5330bc657b7ef0eae25d00ba7ffe85d9ea8ae6540d2197a3788c"},
     {file = "typed_ast-1.4.3.tar.gz", hash = "sha256:fb1bbeac803adea29cedd70781399c99138358c26d05fcbd23c13016b7f5ec65"},
 ]
+types-pyyaml = [
+    {file = "types-PyYAML-6.0.0.tar.gz", hash = "sha256:3d3591ddfc488fc30be3c506a0c0fe54da968fe98d8b76ab12e59d455330ffca"},
+    {file = "types_PyYAML-6.0.0-py3-none-any.whl", hash = "sha256:746f23d351245d176d7bc89eef79e2ee94b4e7306f7d23bfefb3dc946c0fb58d"},
+]
 typing-extensions = [
     {file = "typing_extensions-3.10.0.2-py2-none-any.whl", hash = "sha256:d8226d10bc02a29bcc81df19a26e56a9647f8b0a6d4a83924139f4a8b01f17b7"},
     {file = "typing_extensions-3.10.0.2-py3-none-any.whl", hash = "sha256:f1d25edafde516b146ecd0613dabcc61409817af4766fbbcfb8d1ad4ec441a34"},
diff --git a/pyproject.toml b/pyproject.toml
index 38c625f..e0698b3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "amdfan"
-version = "0.1.12"
+version = "0.1.13"
 description = "Fan monitor and controller for AMD gpus in Linux"
 authors = ["mcgillij <mcgillivray.jason@gmail.com>"]
 license = "GPL-2.0-only"
@@ -35,6 +35,9 @@ pylint = "^2.6.0"
 flake8 = "^3.8.4"
 black = "^20.8b1"
 pytest = "^6.2.2"
+neovim = "^0.3.1"
+mypy = "^0.910"
+types-PyYAML = "^6.0.0"
 
 [tool.poetry.scripts]
 amdfan = 'amdfan.amdfan:cli'
diff --git a/src/amdfan/amdfan.py b/src/amdfan/amdfan.py
index 305a8a2..06729c1 100755
--- a/src/amdfan/amdfan.py
+++ b/src/amdfan/amdfan.py
@@ -6,30 +6,32 @@
 import re
 import sys
 import time
+from typing import List, Dict, Callable
 import yaml
 import numpy as np
 import click
 
-from rich import console
+from rich.console import Console
 from rich.traceback import install
 from rich.prompt import Prompt
 from rich.table import Table
 from rich.live import Live
 from rich.logging import RichHandler
 
+
 install()  # install traceback formatter
 
-CONFIG_LOCATIONS = [
+CONFIG_LOCATIONS: List[str] = [
     "/etc/amdfan.yml",
 ]
 
-DEBUG = bool(os.environ.get("DEBUG", False))
+DEBUG: bool = bool(os.environ.get("DEBUG", False))
 
-ROOT_DIR = "/sys/class/drm"
-HWMON_DIR = "device/hwmon"
+ROOT_DIR: str = "/sys/class/drm"
+HWMON_DIR: str = "device/hwmon"
 
-LOGGER = logging.getLogger("rich")
-DEFAULT_FAN_CONFIG = """#Fan Control Matrix.
+LOGGER = logging.getLogger("rich")  # type: ignore
+DEFAULT_FAN_CONFIG: str = """#Fan Control Matrix.
 # [<Temp in C>,<Fanspeed in %>]
 speed_matrix:
 - [4, 4]
@@ -59,7 +61,7 @@
 # - card0
 """
 
-SYSTEMD_SERVICE = """[Unit]
+SYSTEMD_SERVICE: str = """[Unit]
 Description=amdfan controller
 
 [Service]
@@ -77,7 +79,7 @@
     handlers=[RichHandler(rich_tracebacks=True)],
 )
 
-c = console.Console(style="green on black")
+c: Console = Console(style="green on black")
 
 
 class Card:
@@ -85,10 +87,16 @@ class Card:
     This class is used to map to each card that supports HWMON
     """
 
-    HWMON_REGEX = r"^hwmon\d$"
-    AMD_FIELDS = ["temp1_input", "pwm1_max", "pwm1_min", "pwm1_enable", "pwm1"]
+    HWMON_REGEX: str = r"^hwmon\d$"
+    AMD_FIELDS: List[str] = [
+        "temp1_input",
+        "pwm1_max",
+        "pwm1_min",
+        "pwm1_enable",
+        "pwm1",
+    ]
 
-    def __init__(self, card_id):
+    def __init__(self, card_id: str) -> None:
         self._id = card_id
 
         for node in os.listdir(os.path.join(ROOT_DIR, self._id, HWMON_DIR)):
@@ -96,13 +104,13 @@ def __init__(self, card_id):
                 self._monitor = node
         self._endpoints = self._load_endpoints()
 
-    def _verify_card(self):
+    def _verify_card(self) -> None:
         for endpoint in self.AMD_FIELDS:
             if endpoint not in self._endpoints:
                 LOGGER.info("skipping card: %s missing endpoint %s", self._id, endpoint)
                 raise FileNotFoundError
 
-    def _load_endpoints(self):
+    def _load_endpoints(self) -> Dict:
         _endpoints = {}
         _dir = os.path.join(ROOT_DIR, self._id, HWMON_DIR, self._monitor)
         for endpoint in os.listdir(_dir):
@@ -110,11 +118,11 @@ def _load_endpoints(self):
                 _endpoints[endpoint] = os.path.join(_dir, endpoint)
         return _endpoints
 
-    def read_endpoint(self, endpoint):
+    def read_endpoint(self, endpoint: str) -> str:
         with open(self._endpoints[endpoint], "r") as endpoint_file:
             return endpoint_file.read()
 
-    def write_endpoint(self, endpoint, data):
+    def write_endpoint(self, endpoint: str, data: int) -> int:
         try:
             with open(self._endpoints[endpoint], "w") as endpoint_file:
                 return endpoint_file.write(str(data))
@@ -123,25 +131,25 @@ def write_endpoint(self, endpoint, data):
             sys.exit(1)
 
     @property
-    def fan_speed(self):
+    def fan_speed(self) -> int:
         try:
             return int(self.read_endpoint("fan1_input"))
         except KeyError:  # better to return no speed then explode
             return 0
 
     @property
-    def gpu_temp(self):
+    def gpu_temp(self) -> float:
         return float(self.read_endpoint("temp1_input")) / 1000
 
     @property
-    def fan_max(self):
+    def fan_max(self) -> int:
         return int(self.read_endpoint("pwm1_max"))
 
     @property
-    def fan_min(self):
+    def fan_min(self) -> int:
         return int(self.read_endpoint("pwm1_min"))
 
-    def set_system_controlled_fan(self, state):
+    def set_system_controlled_fan(self, state: bool) -> None:
 
         system_controlled_fan = 2
         manual_control = 1
@@ -150,23 +158,23 @@ def set_system_controlled_fan(self, state):
             "pwm1_enable", system_controlled_fan if state else manual_control
         )
 
-    def set_fan_speed(self, speed):
+    def set_fan_speed(self, speed: int) -> int:
         if speed >= 100:
             speed = self.fan_max
         elif speed <= 0:
             speed = self.fan_min
         else:
-            speed = self.fan_max / 100 * speed
+            speed = int(self.fan_max / 100 * speed)
         self.set_system_controlled_fan(False)
-        return self.write_endpoint("pwm1", int(speed))
+        return self.write_endpoint("pwm1", speed)
 
 
 class Scanner:  # pylint: disable=too-few-public-methods
     """ Used to scan the available cards to see if they are usable """
 
-    CARD_REGEX = r"^card\d$"
+    CARD_REGEX: str = r"^card\d$"
 
-    def __init__(self, cards=None):
+    def __init__(self, cards=None) -> None:
         self.cards = self._get_cards(cards)
 
     def _get_cards(self, cards_to_scan):
@@ -193,7 +201,7 @@ def _get_cards(self, cards_to_scan):
 class FanController:  # pylint: disable=too-few-public-methods
     """ Used to apply the curve at regular intervals """
 
-    def __init__(self, config):
+    def __init__(self, config) -> None:
         self._scanner = Scanner(config.get("cards"))
         if len(self._scanner.cards) < 1:
             LOGGER.error("no compatible cards found, exiting")
@@ -204,7 +212,7 @@ def __init__(self, config):
         self._frequency = config.get("frequency", 5)
         self._last_temp = 0
 
-    def main(self):
+    def main(self) -> None:
         LOGGER.info("Starting amdfan")
         while True:
             for name, card in self._scanner.cards.items():
@@ -256,7 +264,7 @@ class Curve:  # pylint: disable=too-few-public-methods
     creates a fan curve based on user defined points
     """
 
-    def __init__(self, points: list):
+    def __init__(self, points: list) -> None:
         self.points = np.array(points)
         self.temps = self.points[:, 0]
         self.speeds = self.points[:, 1]
@@ -284,7 +292,7 @@ def __init__(self, points: list):
         if np.min(self.speeds) <= 3:
             raise ValueError("Lowest speed value to be set to 4")  # Driver BUG
 
-    def get_speed(self, temp):
+    def get_speed(self, temp: int) -> int:
         """
         returns a speed for a given temperature
         :param temp: int
@@ -294,7 +302,7 @@ def get_speed(self, temp):
         return np.interp(x=temp, xp=self.temps, fp=self.speeds)
 
 
-def load_config(path):
+def load_config(path) -> Callable:
     LOGGER.debug("loading config from %s", path)
     with open(path) as config_file:
         return yaml.safe_load(config_file)
@@ -328,7 +336,9 @@ def load_config(path):
     default=False,
     help="Prints out the amdfan.service file to use with systemd",
 )
-def cli(daemon, monitor, manual, configuration, service):
+def cli(
+    daemon: bool, monitor: bool, manual: bool, configuration: bool, service: bool
+) -> None:
     if daemon:
         run_as_daemon()
     elif monitor:
@@ -343,7 +353,7 @@ def cli(daemon, monitor, manual, configuration, service):
         c.print("Try: --help to see the options")
 
 
-def run_as_daemon():
+def run_as_daemon() -> None:
     config = None
     for location in CONFIG_LOCATIONS:
         if os.path.isfile(location):
@@ -361,19 +371,17 @@ def run_as_daemon():
     FanController(config).main()
 
 
-def show_table(cards):
+def show_table(cards: Dict) -> Table:
     table = Table(title="amdgpu")
     table.add_column("Card")
     table.add_column("fan_speed (RPM)")
     table.add_column("gpu_temp ℃")
-    for card in cards:
-        fan_speed = cards.get(card).fan_speed
-        gpu_temp = cards.get(card).gpu_temp
-        table.add_row(f"{card}", f"{fan_speed}", f"{gpu_temp}")
+    for card, card_value in cards.items():
+        table.add_row(f"{card}", f"{card_value.fan_speed}", f"{card_value.gpu_temp}")
     return table
 
 
-def monitor_cards():
+def monitor_cards() -> None:
     c.print("AMD Fan Control - ctrl-c to quit")
     scanner = Scanner()
     with Live(refresh_per_second=4) as live:
@@ -382,7 +390,7 @@ def monitor_cards():
             live.update(show_table(scanner.cards))
 
 
-def set_fan_speed():
+def set_fan_speed() -> None:
     scanner = Scanner()
     card_to_set = Prompt.ask("Which card?", choices=scanner.cards.keys())
     while True:
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 1dff60b..4c2ab3a 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -21,6 +21,6 @@ def test_params(self):
         result = runner.invoke(cli, service_param)
         assert result.exit_code == 0
         manual_param = "--manual"
-        result = runner.invoke(cli, manual_param, input='\n'.join(['card0', "25"]))
+        result = runner.invoke(cli, manual_param, input="\n".join(["card0", "25"]))
         assert result.exception
         assert result.exit_code == 1  # should be permission denied for non-root