diff --git a/tests/fixtures.py b/tests/fixtures.py
index 6532729f..9369d5e4 100644
--- a/tests/fixtures.py
+++ b/tests/fixtures.py
@@ -421,14 +421,14 @@ def sample(request):
 
 def get_process(extractor, ppid: int, pid: int) -> ProcessHandle:
     for ph in extractor.get_processes():
-        if ph.inner["ppid"] == ppid and ph.pid == pid:
-            return ProcessHandle(pid, {"ppid": ppid})
+        if ph.address.ppid == ppid and ph.address.pid == pid:
+            return ph
     raise ValueError("process not found")
 
 
 def get_thread(extractor, ph: ProcessHandle, tid: int) -> ThreadHandle:
     for th in extractor.get_threads(ph):
-        if th.tid == tid:
+        if th.address.tid == tid:
             return th
     raise ValueError("thread not found")
 
diff --git a/tests/test_freeze.py b/tests/test_freeze.py
index 2c5f1920..b3a4536e 100644
--- a/tests/test_freeze.py
+++ b/tests/test_freeze.py
@@ -22,7 +22,7 @@ import capa.features.extractors.null
 import capa.features.extractors.base_extractor
 from capa.features.address import AbsoluteVirtualAddress
 
-EXTRACTOR = capa.features.extractors.null.NullFeatureExtractor(
+EXTRACTOR = capa.features.extractors.null.NullStaticFeatureExtractor(
     base_address=AbsoluteVirtualAddress(0x401000),
     global_features=[],
     file_features=[
@@ -117,8 +117,8 @@ def compare_extractors(a, b):
 
 
 def test_freeze_str_roundtrip():
-    load = capa.features.freeze.loads
-    dump = capa.features.freeze.dumps
+    load = capa.features.freeze.loads_static
+    dump = capa.features.freeze.dumps_static
     reanimated = load(dump(EXTRACTOR))
     compare_extractors(EXTRACTOR, reanimated)