diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index ec094393..5b2f5ea3 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -25,6 +25,7 @@ repos:
     rev: v2.3.0
     hooks:
       - id: codespell
+        additional_dependencies: ["tomli"]
   - repo: https://github.com/alan-turing-institute/CleverCSV-pre-commit
     rev: v0.8.2
     hooks:
diff --git a/pyproject.toml b/pyproject.toml
index f56a9ae6..3050f05f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -156,6 +156,9 @@ combine-as-imports = true
 split-on-trailing-comma = false
 known-first-party = ["typeshed_stats"]
 
+[tool.codespell]
+ignore-words-list = ["corus"]
+
 [tool.mypy]
 files = ['website_macros.py', 'src', 'tests', 'scripts']
 show_traceback = true