diff --git a/.github/workflows/spellcheck.yml b/.github/workflows/spellcheck.yml
index a2621ecc..6bf72f9d 100644
--- a/.github/workflows/spellcheck.yml
+++ b/.github/workflows/spellcheck.yml
@@ -26,5 +26,6 @@ jobs:
         pip install -e '.[docs]'
     - name: Check spelling
       run: |
+        codespell README.md --ignore-words docs/codespell-ignore-words.txt
         codespell docs/*.rst --ignore-words docs/codespell-ignore-words.txt
         codespell datasette -S datasette/static --ignore-words docs/codespell-ignore-words.txt
diff --git a/setup.py b/setup.py
index 678ec5be..b8da61d0 100644
--- a/setup.py
+++ b/setup.py
@@ -72,7 +72,7 @@ setup(
             "Sphinx==6.1.3",
             "furo==2023.3.27",
             "sphinx-autobuild",
-            "codespell",
+            "codespell>=2.2.5",
             "blacken-docs",
             "sphinx-copybutton",
         ],