diff --git a/.github/workflows/ibis-backends.yml b/.github/workflows/ibis-backends.yml
index b440dbe7a295f..22fe11307b5b6 100644
--- a/.github/workflows/ibis-backends.yml
+++ b/.github/workflows/ibis-backends.yml
@@ -57,6 +57,7 @@ jobs:
         backend:
           - name: duckdb
             title: DuckDB
+            serial: true
             extras:
               - duckdb
               - deltalake