diff --git a/setup.py b/setup.py
index e7cfdf2..312c32d 100644
--- a/setup.py
+++ b/setup.py
@@ -55,8 +55,8 @@
     include_package_data=True,
     install_requires=[
         "base58",
-        "eth-hash>=0.1.0,<1.0.0",
-        "eth-typing>=1.0.0,<3.0.0",
+        "eth-hash",
+        "eth-typing",
         "toolz>0.8.2,<1;implementation_name=='pypy'",
         "cytoolz>=0.8.2,<1.0.0;implementation_name=='cpython'",
     ],
diff --git a/trx_utils/decorators.py b/trx_utils/decorators.py
index 7f32abe..1f29cc1 100644
--- a/trx_utils/decorators.py
+++ b/trx_utils/decorators.py
@@ -87,7 +87,7 @@ def wrapper(*args, **kwargs):
         if kwargs:
             _validate_supported_kwarg(kwargs)
 
-        if len(args) is 0 and "primitive" not in kwargs:
+        if len(args) == 0 and "primitive" not in kwargs:
             _assert_hexstr_or_text_kwarg_is_text_type(**kwargs)
         return to_wrap(*args, **kwargs)