diff --git a/tests/unit/aggregation/test_values.py b/tests/unit/aggregation/test_values.py
index 860f313d..42faca91 100644
--- a/tests/unit/aggregation/test_values.py
+++ b/tests/unit/aggregation/test_values.py
@@ -51,7 +51,7 @@
     ],
 )
 
-AGGREGATOR_PARAMETRIZATIONS = [
+AGGREGATOR_PARAMETRIZATIONS: list[tuple] = [
     (AlignedMTL(), J_base, tensor([0.2133, 0.9673, 0.9673])),
     (ConFIG(), J_base, tensor([0.1588, 2.0706, 2.0706])),
     (Constant(tensor([1.0, 2.0])), J_base, tensor([8.0, 3.0, 3.0])),
@@ -71,7 +71,7 @@
 G_base = J_base @ J_base.T
 G_Krum = J_Krum @ J_Krum.T
 
-WEIGHTING_PARAMETRIZATIONS = [
+WEIGHTING_PARAMETRIZATIONS: list[tuple] = [
     (AlignedMTLWeighting(), G_base, tensor([0.5591, 0.4083])),
     (ConstantWeighting(tensor([1.0, 2.0])), G_base, tensor([1.0, 2.0])),
     (DualProjWeighting(), G_base, tensor([0.6109, 0.5000])),
diff --git a/tests/unit/autojac/test_jac_to_grad.py b/tests/unit/autojac/test_jac_to_grad.py
index 2db0b7f3..91278f07 100644
--- a/tests/unit/autojac/test_jac_to_grad.py
+++ b/tests/unit/autojac/test_jac_to_grad.py
@@ -191,7 +191,7 @@ def dummy_backward_pre_hook(_module, _grad_output) -> Tensor:
     assert not _has_forward_hook(module)
 
 
-_PARAMETRIZATIONS = [
+_PARAMETRIZATIONS: list[tuple] = [
     (AlignedMTL(), True),
     (DualProj(), True),
     (IMTLG(), True),