diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 068ea00..cff3ac0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,6 +14,13 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+    typos:
+        name: Typos
+        runs-on: ubuntu-latest
+        steps:
+        -   uses: actions/checkout@v4
+        -   uses: crate-ci/typos@master
+
     ruff:
         name: Ruff
         runs-on: ubuntu-latest
diff --git a/doc/misc.rst b/doc/misc.rst
index eacd0b1..df1da95 100644
--- a/doc/misc.rst
+++ b/doc/misc.rst
@@ -147,6 +147,6 @@ Glossary
     mix-in
         See `Wikipedia article <https://en.wikipedia.org/wiki/Mixin>`__.
 
-        Be sure to mention the mix-in before the base classe being mixed in the
+        Be sure to mention the mix-in before the base class being mixed in the
         list of base classes. This way, the mix-in can override base class
         behavior.
diff --git a/pymbolic/geometric_algebra/primitives.py b/pymbolic/geometric_algebra/primitives.py
index 94e1ef5..b8140f3 100644
--- a/pymbolic/geometric_algebra/primitives.py
+++ b/pymbolic/geometric_algebra/primitives.py
@@ -97,7 +97,7 @@ def __call__(self, operand):
 
     @staticmethod
     def resolve(expr):
-        # This method will need to be overriden by codes using this
+        # This method will need to be overridden by codes using this
         # infrastructure to use the appropriate subclass of DerivativeBinder.
 
         from pymbolic.geometric_algebra.mapper import DerivativeBinder
diff --git a/pymbolic/interop/common.py b/pymbolic/interop/common.py
index e8caf8b..7bd5dc5 100644
--- a/pymbolic/interop/common.py
+++ b/pymbolic/interop/common.py
@@ -134,7 +134,7 @@ def _comparison_operator(self, expr, operator=None):
         return prim.Comparison(left, operator, right)
 
     map_Equality = partial(_comparison_operator, operator="==")  # noqa: N815
-    map_Unequality = partial(_comparison_operator, operator="!=")  # noqa: N815
+    map_Unequality = partial(_comparison_operator, operator="!=")  # noqa: N815  # spellchecker: disable-line
     map_GreaterThan = partial(_comparison_operator, operator=">=")  # noqa: N815
     map_LessThan = partial(_comparison_operator, operator="<=")  # noqa: N815
     map_StrictGreaterThan = partial(_comparison_operator, operator=">")  # noqa: N815
@@ -199,7 +199,7 @@ def map_comparison(self, expr):
         if expr.operator == "==":
             return self.sym.Equality(left, right)
         elif expr.operator == "!=":
-            return self.sym.Unequality(left, right)
+            return self.sym.Unequality(left, right)  # spellchecker: disable-line
         elif expr.operator == "<":
             return self.sym.StrictLessThan(left, right)
         elif expr.operator == ">":
diff --git a/pymbolic/mapper/optimize.py b/pymbolic/mapper/optimize.py
index 8805a8c..4295e09 100644
--- a/pymbolic/mapper/optimize.py
+++ b/pymbolic/mapper/optimize.py
@@ -30,7 +30,7 @@
 # This machinery applies AST rewriting to the mapper in a mildly brutal
 # manner, and as such it requires some attention from the user to
 # make sure all transformations applied are valid. A good way to do
-# this is to look at the generated code by settting print_modified_code_file
+# this is to look at the generated code by setting print_modified_code_file
 # to sys.stdout or the like.
 
 # Note that this machinery is intentionally generic enough so as to also
diff --git a/pymbolic/polynomial.py b/pymbolic/polynomial.py
index 52ddea3..edd38f3 100644
--- a/pymbolic/polynomial.py
+++ b/pymbolic/polynomial.py
@@ -129,36 +129,36 @@ def __add__(self, other):
             else:
                 return other.__add__(self)
 
-        iself = 0
-        iother = 0
+        i_self = 0
+        i_other = 0
 
         result = []
-        while iself < len(self.Data) and iother < len(other.Data):
-            exp_self = self.Data[iself][0]
-            exp_other = other.Data[iother][0]
+        while i_self < len(self.Data) and i_other < len(other.Data):
+            exp_self = self.Data[i_self][0]
+            exp_other = other.Data[i_other][0]
             if exp_self == exp_other:
-                coeff = self.Data[iself][1] + other.Data[iother][1]
+                coeff = self.Data[i_self][1] + other.Data[i_other][1]
                 if coeff:
                     result.append((exp_self, coeff))
-                iself += 1
-                iother += 1
+                i_self += 1
+                i_other += 1
             elif exp_self > exp_other:
-                result.append((exp_other, other.Data[iother][1]))
-                iother += 1
+                result.append((exp_other, other.Data[i_other][1]))
+                i_other += 1
             elif exp_self < exp_other:
-                result.append((exp_self, self.Data[iself][1]))
-                iself += 1
+                result.append((exp_self, self.Data[i_self][1]))
+                i_self += 1
 
         # we have exhausted at least one list, exhaust the other
-        while iself < len(self.Data):
-            exp_self = self.Data[iself][0]
-            result.append((exp_self, self.Data[iself][1]))
-            iself += 1
-
-        while iother < len(other.Data):
-            exp_other = other.Data[iother][0]
-            result.append((exp_other, other.Data[iother][1]))
-            iother += 1
+        while i_self < len(self.Data):
+            exp_self = self.Data[i_self][0]
+            result.append((exp_self, self.Data[i_self][1]))
+            i_self += 1
+
+        while i_other < len(other.Data):
+            exp_other = other.Data[i_other][0]
+            result.append((exp_other, other.Data[i_other][1]))
+            i_other += 1
 
         return Polynomial(self.Base, tuple(result))
 
diff --git a/pyproject.toml b/pyproject.toml
index 16d5021..912473b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -100,6 +100,11 @@ inline-quotes = "double"
 docstring-quotes = "double"
 multiline-quotes = "double"
 
+[tool.typos.default]
+extend-ignore-re = [
+  "(?Rm)^.*(#|//)\\s*spellchecker:\\s*disable-line$"
+]
+
 [tool.ruff.lint.isort]
 known-first-party = ["pytools"]
 known-local-folder = ["pymbolic"]