diff --git a/tests/conftest.py b/tests/conftest.py
index 0a27d5cf..6e87b554 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -20,7 +20,9 @@
 MINI_BATCH_SIZE = 8
 RANDOM_SEED = 42
 
-set_seed(42)
+@pytest.fixture(scope='function', autouse=True)
+def reset_prngs():
+    set_seed(42)
 
 
 @pytest.fixture(scope="session", autouse=True)
@@ -236,7 +238,7 @@ def load_mnist_model_softmax():
     return model
 
 
-@pytest.fixture(scope="session", autouse=True)
+@pytest.fixture(scope="session", autouse=False)
 def load_hf_distilbert_sequence_classifier():
     """
     TODO
@@ -248,8 +250,8 @@ def load_hf_distilbert_sequence_classifier():
     return model
 
 
-@pytest.fixture(scope="session", autouse=True)
-def mock_hf_text():
+@pytest.fixture(scope="session", autouse=False)
+def dummy_hf_tokenizer():
     """
     TODO
     """
@@ -262,4 +264,4 @@ def mock_hf_text():
 @pytest.fixture(scope="session", autouse=True)
 def set_env():
     """Set ENV var, so test outputs are not polluted by progress bars and warnings."""
-    os.environ["PYTEST"] = "1"
+    os.environ["PYTEST"] = "1"
\ No newline at end of file
diff --git a/tests/functions/test_pytorch_model.py b/tests/functions/test_pytorch_model.py
index 09631a14..f995fb8c 100644
--- a/tests/functions/test_pytorch_model.py
+++ b/tests/functions/test_pytorch_model.py
@@ -250,17 +250,17 @@ def test_add_mean_shift_to_first_layer(load_mnist_model):
     [
         (
             lazy_fixture("load_hf_distilbert_sequence_classifier"),
-            lazy_fixture("mock_hf_text"),
+            lazy_fixture("dummy_hf_tokenizer"),
             False,
             {},
-            nullcontext(np.array([[0.01157812, 0.03933399]])),
+            nullcontext(np.array([[0.00424026, -0.03878461]])),
         ),
         (
             lazy_fixture("load_hf_distilbert_sequence_classifier"),
-            lazy_fixture("mock_hf_text"),
+            lazy_fixture("dummy_hf_tokenizer"),
             False,
             {"labels": torch.tensor([1]), "output_hidden_states": True},
-            nullcontext(np.array([[0.01157812, 0.03933399]])),
+            nullcontext(np.array([[0.00424026, -0.03878461]])),
         ),
         (
             lazy_fixture("load_hf_distilbert_sequence_classifier"),
@@ -268,14 +268,14 @@ def test_add_mean_shift_to_first_layer(load_mnist_model):
                 102]]), 'attention_mask': torch.tensor([[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]])},
             False,
             {"labels": torch.tensor([1]), "output_hidden_states": True},
-            nullcontext(np.array([[0.01157812, 0.03933399]])),
+            nullcontext(np.array([[0.00424026, -0.03878461]])),
         ),
         (
             lazy_fixture("load_hf_distilbert_sequence_classifier"),
-            lazy_fixture("mock_hf_text"),
+            lazy_fixture("dummy_hf_tokenizer"),
             True,
             {},
-            nullcontext(np.array([[0.49306148, 0.5069385]])),
+            nullcontext(np.array([[0.51075452, 0.4892454]])),
         ),
         (
             lazy_fixture("load_hf_distilbert_sequence_classifier"),