diff --git a/nl-writer2/nlwpy/test/test_solve.py b/nl-writer2/nlwpy/test/test_solve.py
index 672ea184c..7b4afca49 100644
--- a/nl-writer2/nlwpy/test/test_solve.py
+++ b/nl-writer2/nlwpy/test/test_solve.py
@@ -159,10 +159,8 @@ def solve_and_check(solver, sopts, binary, stub):
 
 def find_solver():
     lst = modules.installed()
-    if "gurobi" in lst:
-        return modules.find("gurobi")
-    else:
-        return modules.find("minos")
+    assert "minos" in lst
+    return modules.find("minos")
 
 
 def test_binary_nl():
diff --git a/nl-writer2/pyproject.toml b/nl-writer2/pyproject.toml
index e50cec73a..d71a03760 100644
--- a/nl-writer2/pyproject.toml
+++ b/nl-writer2/pyproject.toml
@@ -11,11 +11,12 @@ test-requires = [
   "--index-url https://pypi.ampl.com",
   "--extra-index-url https://pypi.org/simple",
   "ampl_module_base",
-  "ampl_module_gurobi",
-  "ampl_module_highs",
   "ampl_module_minos",
-  "amplpy", "pandas",
-  "numpy", scipy", "pytest"]
+  "amplpy",
+  "pandas",
+  "numpy",
+  "scipy",
+  "pytest"]
 test-command = "pytest --pyargs nlwpy.test"
 
 [tool.cibuildwheel.macos]