diff --git a/pyproject.toml b/pyproject.toml
index 3a945ed..808f716 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ readme = "README.md"
 requires-python = ">=3.12"
 dependencies = [
     "duckdb>=1.1.3",
-    "great-tables>=0.15.0",
+    "great-tables>=0.21.0",
     "ipykernel>=6.29.5",
     "jupyter>=1.1.1",
     "jupytext>=1.17.2",