diff --git a/tests/property_tests/_strategies.py b/tests/property_tests/_strategies.py
index 5d5c924..52f9ed5 100644
--- a/tests/property_tests/_strategies.py
+++ b/tests/property_tests/_strategies.py
@@ -18,17 +18,22 @@ from . import _types as t
 
 MAX = int(getenv('HYPOTHESIS_GEN_MAX_SIZE', '0')) or None
 
+
+def one_of(items):
+    return st.one_of((st.just(i) for i in items))
+
+
 DATA = st.data()
-BIDICT_TYPES = st.sampled_from(t.BIDICT_TYPES)
-MUTABLE_BIDICT_TYPES = st.sampled_from(t.MUTABLE_BIDICT_TYPES)
-FROZEN_BIDICT_TYPES = st.sampled_from(t.FROZEN_BIDICT_TYPES)
-ORDERED_BIDICT_TYPES = st.sampled_from(t.ORDERED_BIDICT_TYPES)
-REVERSIBLE_BIDICT_TYPES = st.sampled_from(t.REVERSIBLE_BIDICT_TYPES)
-MAPPING_TYPES = st.sampled_from(t.MAPPING_TYPES)
-NON_BI_MAPPING_TYPES = st.sampled_from(t.NON_BI_MAPPING_TYPES)
-ORDERED_MAPPING_TYPES = st.sampled_from(t.ORDERED_MAPPING_TYPES)
-HASHABLE_MAPPING_TYPES = st.sampled_from(t.HASHABLE_MAPPING_TYPES)
-ON_DUP_ACTIONS = st.sampled_from((DROP_NEW, DROP_OLD, RAISE))
+BIDICT_TYPES = one_of(t.BIDICT_TYPES)
+MUTABLE_BIDICT_TYPES = one_of(t.MUTABLE_BIDICT_TYPES)
+FROZEN_BIDICT_TYPES = one_of(t.FROZEN_BIDICT_TYPES)
+ORDERED_BIDICT_TYPES = one_of(t.ORDERED_BIDICT_TYPES)
+REVERSIBLE_BIDICT_TYPES = one_of(t.REVERSIBLE_BIDICT_TYPES)
+MAPPING_TYPES = one_of(t.MAPPING_TYPES)
+NON_BI_MAPPING_TYPES = one_of(t.NON_BI_MAPPING_TYPES)
+ORDERED_MAPPING_TYPES = one_of(t.ORDERED_MAPPING_TYPES)
+HASHABLE_MAPPING_TYPES = one_of(t.HASHABLE_MAPPING_TYPES)
+ON_DUP_ACTIONS = one_of((DROP_NEW, DROP_OLD, RAISE))
 ON_DUP = st.tuples(ON_DUP_ACTIONS, ON_DUP_ACTIONS, ON_DUP_ACTIONS).map(OnDup._make)
 
 TEXT = st.text()