diff --git a/ibis/tests/benchmarks/test_benchmarks.py b/ibis/tests/benchmarks/test_benchmarks.py
index bc3e09dcd2ea..c5e68a407f4c 100644
--- a/ibis/tests/benchmarks/test_benchmarks.py
+++ b/ibis/tests/benchmarks/test_benchmarks.py
@@ -775,7 +775,7 @@ def srcs():
 
 @pytest.fixture
 def nrels():
-    return 300
+    return 225
 
 
 def make_big_union(t, nrels):