diff --git a/.github/workflows/Tests.yml b/.github/workflows/Tests.yml
index 882d2ab..7f841f5 100644
--- a/.github/workflows/Tests.yml
+++ b/.github/workflows/Tests.yml
@@ -14,6 +14,9 @@ jobs:
       matrix:
         python-version: [3.9, 3.12]
         environment: ["min-deps", "full", "min-ver"]
+        exclude:
+         - python-version: 3.9
+           environment: "full"
         exclude:
          - python-version: 3.12
            environment: "min-ver"
diff --git a/devtools/conda-envs/min-ver-environment.yaml b/devtools/conda-envs/min-ver-environment.yaml
index 6fa8b39..0ef1d9a 100644
--- a/devtools/conda-envs/min-ver-environment.yaml
+++ b/devtools/conda-envs/min-ver-environment.yaml
@@ -8,7 +8,7 @@ dependencies:
   - nomkl
 
     # Backends
-  - tensorflow ==2.15.*
+  - tensorflow ==2.10.*
   - dask ==2021.*
 
     # Testing
diff --git a/opt_einsum/tests/test_backends.py b/opt_einsum/tests/test_backends.py
index 7c81c67..c6e02f6 100644
--- a/opt_einsum/tests/test_backends.py
+++ b/opt_einsum/tests/test_backends.py
@@ -379,9 +379,13 @@ def test_sparse(string):
     sparse_views = [sparse.COO.from_numpy(x) for x in views]
     sparse_opt = expr(*sparse_views)
 
+    # If the expression returns a float, stop here
+    if not ein.shape:
+        assert pytest.approx(ein) == 0.0
+        return
+
     # check type is maintained when not using numpy arrays
     assert isinstance(sparse_opt, sparse.COO)
-
     assert np.allclose(ein, sparse_opt.todense())
 
     # try raw contract