diff --git a/.typos.toml b/.typos.toml
new file mode 100644
index 0000000..b22ff37
--- /dev/null
+++ b/.typos.toml
@@ -0,0 +1,2 @@
+[default.extend-words]
+mis = "mis"
diff --git a/docs/usage.rst b/docs/usage.rst
index 9550aea..cb75668 100644
--- a/docs/usage.rst
+++ b/docs/usage.rst
@@ -701,7 +701,7 @@ repo
 
 subrepo
   Check the version in this subrepo. This field is optional.
-  When ommited all subrepos are queried.
+  When omitted all subrepos are queried.
 
 This source supports :ref:`list options`.
 
@@ -731,7 +731,7 @@ repo
   Should be one of ``addon`` or ``package``. Packages in ``addon2-1.xml`` use ``addon`` and packages in ``repository2-1.xml`` use ``package``.
 
 channel
-  Choose the target channel from one of ``stable``, ``beta``, ``dev`` or ``canary``. This option also accepts a comma-seperated list to pick from multiple channels. For example, the latest unstable version is picked with ``beta,dev,canary``. The default is ``stable``.
+  Choose the target channel from one of ``stable``, ``beta``, ``dev`` or ``canary``. This option also accepts a comma-separated list to pick from multiple channels. For example, the latest unstable version is picked with ``beta,dev,canary``. The default is ``stable``.
 
 host_os
   Choose the target OS for the tracked package from one of ``linux``, ``macosx``, ``windows``. The default is ``linux``. For OS-independent packages (e.g., Java JARs), this field is ignored.
diff --git a/nvchecker/httpclient/base.py b/nvchecker/httpclient/base.py
index ae861f9..b343a6c 100644
--- a/nvchecker/httpclient/base.py
+++ b/nvchecker/httpclient/base.py
@@ -27,7 +27,7 @@ class Response:
     self.body = body
 
   def json(self):
-    '''Convert reponse content to JSON.'''
+    '''Convert response content to JSON.'''
     return _json.loads(self.body.decode('utf-8'))
 
 class BaseSession:
@@ -95,7 +95,7 @@ class BaseSession:
                          tries = i, exc_info = e)
           continue
 
-    raise Exception('shoud not reach')
+    raise Exception('should not reach')
 
   async def request_impl(
     self, url: str, *,
diff --git a/nvchecker_source/apt.py b/nvchecker_source/apt.py
index dddb634..8848c69 100644
--- a/nvchecker_source/apt.py
+++ b/nvchecker_source/apt.py
@@ -135,7 +135,7 @@ async def get_version(
   strip_release = conf.get('strip_release', False)
 
   if srcpkg and pkg:
-    raise GetVersionError('Setting both srcpkg and pkg is ambigious')
+    raise GetVersionError('Setting both srcpkg and pkg is ambiguous')
   elif not srcpkg and not pkg:
     pkg = name