diff --git a/pyproject.toml b/pyproject.toml
index e6a9394856..fbe068da06 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -82,7 +82,7 @@ bigquery = ["google-api-python-client>=1.12.1"]
 ckan = ["frictionless-ckan-mapper>=1.0"]
 csv = []
 datasette = ["datasette>=0.64.2"]
-duckdb = ["sqlalchemy>=1.4", "duckdb-engine>=0.7", "duckdb>=0.8"]
+duckdb = ["sqlalchemy>=1.4, <=2.0.35", "duckdb-engine>=0.7", "duckdb>=0.8"]
 excel = ["xlrd>=1.2", "xlwt>=1.2", "openpyxl>=3.0", "tableschema-to-template>=0.0"]
 json = ["ijson>=3.0", "jsonlines>=1.2"]
 github = ["pygithub>=1.50"]