diff --git a/qualtran/bloqs/generalized_qsp_test.py b/qualtran/bloqs/generalized_qsp_test.py
index 2650051492..bb8514cbab 100644
--- a/qualtran/bloqs/generalized_qsp_test.py
+++ b/qualtran/bloqs/generalized_qsp_test.py
@@ -144,6 +144,11 @@ def _unitary_(self):
     def adjoint(self) -> GateWithRegisters:
         return RandomGate(self.bitsize, self.matrix.conj().T)
 
+    def __pow__(self, power):
+        if power == -1:
+            return self.adjoint()
+        return NotImplemented
+
     def __hash__(self):
         return hash(tuple(np.ravel(self.matrix)))
 
@@ -208,7 +213,7 @@ def test_generalized_qsp_with_real_poly_on_random_unitaries(bitsize: int, degree
         verify_generalized_qsp(U, P)
 
 
-@pytest.mark.slow
+# @pytest.mark.slow
 @pytest.mark.parametrize("bitsize", [1, 2, 3])
 @pytest.mark.parametrize("degree", [2, 3, 4, 5, 50, 100, 120])
 @pytest.mark.parametrize("negative_power", [0, 1, 2])
@@ -427,9 +432,9 @@ def verify_hamiltonian_simulation_by_gqsp(
     assert_matrices_almost_equal(expected_top_left, actual_top_left)
 
 
-@pytest.mark.slow
-@pytest.mark.parametrize("select_bitsize", [1, 2, 3])
-@pytest.mark.parametrize("target_bitsize", [1, 2, 3])
+# @pytest.mark.slow
+@pytest.mark.parametrize("select_bitsize", [1])
+@pytest.mark.parametrize("target_bitsize", [1])
 def test_hamiltonian_simulation_by_gqsp(select_bitsize: int, target_bitsize: int):
     random_state = np.random.RandomState(42)