diff --git a/.github/workflows/e2e_tests.yml b/.github/workflows/e2e_tests.yml
index b8f8ce5..37ba4cd 100644
--- a/.github/workflows/e2e_tests.yml
+++ b/.github/workflows/e2e_tests.yml
@@ -6,6 +6,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     strategy:
+      max-parallel: 1
       matrix:
         python: ["3.10", "3.11", "3.12"]
 
diff --git a/tests/test_e2e.py b/tests/test_e2e.py
index a010960..1d61d54 100644
--- a/tests/test_e2e.py
+++ b/tests/test_e2e.py
@@ -82,12 +82,8 @@ def test_wallet_transfer(imported_wallet):
 
     transfer = imported_wallet.transfer(
         amount=Decimal("0.000000001"), asset_id="eth", destination=destination_wallet
-    )
-
-    transfer.wait()
-    time.sleep(2)
+    ).wait()
 
-    assert transfer is not None
     assert transfer.status.value == "complete"
 
     final_source_balance = Decimal(str(imported_wallet.balances().get("eth", 0)))