diff --git a/_typos.toml b/_typos.toml
new file mode 100644
index 0000000..6811af6
--- /dev/null
+++ b/_typos.toml
@@ -0,0 +1,4 @@
+[default.extend-words]
+# Don't correct the name "Jon Atack".
+Atack = "Atack"
+optin = "optin"