diff --git a/process_bigraph/composite.py b/process_bigraph/composite.py
index 1ed2c23..89c5413 100644
--- a/process_bigraph/composite.py
+++ b/process_bigraph/composite.py
@@ -10,8 +10,7 @@
 import collections
 from typing import Dict
 
-from bigraph_schema import Edge, TypeSystem, get_path, set_path, deep_merge
-from bigraph_schema.registry import Registry, is_schema_key, hierarchy_depth, strip_schema_keys
+from bigraph_schema import Edge, TypeSystem, get_path, set_path, deep_merge, is_schema_key, strip_schema_keys, Registry, hierarchy_depth
 
 from process_bigraph.process_types import process_types
 from process_bigraph.protocols import local_lookup, local_lookup_module
diff --git a/process_bigraph/process_types.py b/process_bigraph/process_types.py
index 95a5aee..6ce25b7 100644
--- a/process_bigraph/process_types.py
+++ b/process_bigraph/process_types.py
@@ -4,8 +4,7 @@
 
 import copy
 
-from bigraph_schema import Edge, deep_merge
-from bigraph_schema.registry import visit_method
+from bigraph_schema import Edge, deep_merge, visit_method
 
 
 def apply_process(schema, current, update, core):
diff --git a/process_bigraph/tests.py b/process_bigraph/tests.py
index ee7629c..3d651ae 100644
--- a/process_bigraph/tests.py
+++ b/process_bigraph/tests.py
@@ -6,12 +6,16 @@
 import pytest
 
 from process_bigraph.composite import Process, Step, Composite, merge_collections, ProcessTypes
+from process_bigraph.experiments.minimal_gillespie import EXPORT as gillespie_types
 # from process_bigraph.type_system import ProcessTypes
 
 
 @pytest.fixture
 def core():
-    return ProcessTypes()
+    types = ProcessTypes()
+    types.import_types(gillespie_types)
+
+    return types
 
 
 class IncreaseProcess(Process):
@@ -56,11 +60,6 @@ def test_merge_collections(core):
     assert c[('what',)] == [1, 2, 3, 4, 5, 11]
 
 
-@pytest.fixture
-def core():
-    return ProcessTypes()
-
-
 def test_process(core):
     process = IncreaseProcess({'rate': 0.2}, core=core)
     interface = process.interface()
@@ -446,6 +445,7 @@ def test_emitter(core):
 
 if __name__ == '__main__':
     core = ProcessTypes()
+    core.import_types(gillespie_types)
 
     test_default_config(core)
     test_merge_collections(core)