diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index a38bbf47..c17b2bc0 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -77,6 +77,12 @@ repos:
   - id: disallow-caps
     name: Disallow improper capitalization
     language: pygrep
-    entry: PyBind|Numpy|Cmake|Github
+    entry: PyBind|Numpy|Cmake|Github|PyTest
     types:
     - markdown
+
+- repo: https://github.com/codespell-project/codespell
+  rev: v2.1.0
+  hooks:
+  - id: codespell
+    args: ["-L", "sur"]
diff --git a/cibuildwheel/util.py b/cibuildwheel/util.py
index 3fb47ef3..079cc53d 100644
--- a/cibuildwheel/util.py
+++ b/cibuildwheel/util.py
@@ -144,8 +144,8 @@ class Unbuffered:
         self.stream.write(data)
         self.stream.flush()
 
-    def writelines(self, datas):  # type: ignore
-        self.stream.writelines(datas)
+    def writelines(self, data):  # type: ignore
+        self.stream.writelines(data)
         self.stream.flush()
 
     def __getattr__(self, attr):  # type: ignore
diff --git a/docs/contributing.md b/docs/contributing.md
index 3cd7e729..526c46ee 100644
--- a/docs/contributing.md
+++ b/docs/contributing.md
@@ -20,7 +20,7 @@ Design Goals
 
 Other notes:
 
-- The platforms are very similar, until they're not. I'd rather have straight-forward code than totally DRY code, so let's keep airy platfrom abstractions to a minimum.
+- The platforms are very similar, until they're not. I'd rather have straight-forward code than totally DRY code, so let's keep airy platform abstractions to a minimum.
 - I might want to break the options into a shared config file one day, so that config is more easily shared. That has motivated some of the design decisions.
 
 ### cibuildwheel's relationship with build errors
diff --git a/docs/extra.css b/docs/extra.css
index 4ed1e23d..89eb024d 100644
--- a/docs/extra.css
+++ b/docs/extra.css
@@ -148,7 +148,7 @@ h1, h2, h3, h4, h5, h6 {
 }
 
 .tabs-header button:focus-visible {
-  /* preserve an outline for accesibility purposes */
+  /* preserve an outline for accessibility purposes */
   outline: 1px solid currentColor;
   outline-offset: -1px;
 }
diff --git a/docs/faq.md b/docs/faq.md
index 8dc36107..bbac332d 100644
--- a/docs/faq.md
+++ b/docs/faq.md
@@ -16,7 +16,7 @@ If your wheel didn't compile, check the list below for some debugging tips.
 
 ### Building Python 2.7 / PyPy2 wheels
 
-See the [cibuildwheel verison 1 docs](https://cibuildwheel.readthedocs.io/en/1.x/) for information about building Python 2.7 or PyPy2 wheels. There are lots of tricks and workaround there that are no longer required for Python 3 in cibuildwheel 2.
+See the [cibuildwheel version 1 docs](https://cibuildwheel.readthedocs.io/en/1.x/) for information about building Python 2.7 or PyPy2 wheels. There are lots of tricks and workaround there that are no longer required for Python 3 in cibuildwheel 2.
 
 ### Linux builds on Docker
 
diff --git a/docs/options.md b/docs/options.md
index 539db4cf..144b6e94 100644
--- a/docs/options.md
+++ b/docs/options.md
@@ -240,7 +240,7 @@ See the [cibuildwheel 1 documentation](https://cibuildwheel.readthedocs.io/en/1.
     skip = "pp*"
     ```
 
-    It is generally recommened to set `CIBW_BUILD` as an environment variable, though `skip`
+    It is generally recommended to set `CIBW_BUILD` as an environment variable, though `skip`
     tends to be useful in a config file; you can statically declare that you don't
     support pypy, for example.
 
@@ -337,7 +337,7 @@ This option can also be set using the [command-line option](#command-line) `--ar
     archs = ["auto", "aarch64"]
     ```
 
-    It is generally recommmended to use the environment variable or
+    It is generally recommended to use the environment variable or
     command-line option for Linux, as selecting archs often depends
     on your specific runner having qemu installed.
 
@@ -841,7 +841,7 @@ Auditwheel detects the version of the manylinux standard in the Docker image thr
     ```
 
     Like any other option, these can be placed in `[tool.cibuildwheel.linux]`
-    if you perfer; they have no effect on `macos` and `windows`.
+    if you prefer; they have no effect on `macos` and `windows`.
 
 ### `CIBW_DEPENDENCY_VERSIONS` {: #dependency-versions}
 > Specify how cibuildwheel controls the versions of the tools it uses
@@ -1080,7 +1080,7 @@ Platform-specific environment variables are also available:<br/>
     CIBW_TEST_EXTRAS: "test,qt"
     ```
 
-    Seperate multiple items with a comma.
+    Separate multiple items with a comma.
 
 !!! tab examples "pyproject.toml"
 
diff --git a/unit_test/environment_test.py b/unit_test/environment_test.py
index c1ffef09..c5162aea 100644
--- a/unit_test/environment_test.py
+++ b/unit_test/environment_test.py
@@ -106,10 +106,12 @@ def test_substitution_with_backslash():
 
 def test_awkwardly_quoted_variable():
     environment_recipe = parse_environment(
-        'VAR2=something"like this""$VAR1"$VAR1$(echo "theres more")"$(echo "and more!")"'
+        'VAR2=something"like this""$VAR1"$VAR1$(echo "there is more")"$(echo "and more!")"'
     )
 
     # pass the existing process env so PATH is available
     environment_dict = environment_recipe.as_dictionary({"VAR1": "but wait"})
 
-    assert environment_dict.get("VAR2") == "somethinglike thisbut waitbut waittheres moreand more!"
+    assert (
+        environment_dict.get("VAR2") == "somethinglike thisbut waitbut waitthere is moreand more!"
+    )