diff --git a/setup.cfg b/setup.cfg
index ff83ff862a3..c327700daf5 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -44,7 +44,7 @@ install_requires =
     packaging>=20.9
     pyyaml>=4.2b1
     setuptools>=19.6
-    sympy>=1.2
+    sympy>=1.2,<1.9
     toml>=0.10.2
     tqdm>=3.4.0
     unyt>=2.8.0
diff --git a/tests/tests.yaml b/tests/tests.yaml
index 2264127dad7..39b0b0d0694 100644
--- a/tests/tests.yaml
+++ b/tests/tests.yaml
@@ -170,7 +170,7 @@ answer_tests:
   local_cylindrical_background_010:  # PR 3520
     - yt/geometry/coordinates/tests/test_cylindrical_coordinates.py:test_noise_plots
 
-  local_spherical_background_001:  # PR 3533
+  local_spherical_background_002:  # PR 3533 + 3520
     - yt/geometry/coordinates/tests/test_spherical_coordinates.py:test_noise_plots
 
   #local_particle_trajectory_001: