diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7d79123de..cb1eecbf3 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -6,7 +6,7 @@ on:
     - 'release/*'
   pull_request:
 env:
-  CORE_REPO_SHA: 0ef76a5cc39626f783416ca75e43556e2bb2739d
+  CORE_REPO_SHA: d054dff47d2da663a39b9656d106c3d15f344269
 
 jobs:
   build:
diff --git a/instrumentation/opentelemetry-instrumentation-asgi/tests/test_asgi_middleware.py b/instrumentation/opentelemetry-instrumentation-asgi/tests/test_asgi_middleware.py
index cb2217448..209acdf66 100644
--- a/instrumentation/opentelemetry-instrumentation-asgi/tests/test_asgi_middleware.py
+++ b/instrumentation/opentelemetry-instrumentation-asgi/tests/test_asgi_middleware.py
@@ -656,10 +656,7 @@ class TestAsgiApplication(AsgiTestBase):
         self.send_input({"type": "websocket.receive", "text": "ping"})
         self.send_input({"type": "websocket.disconnect"})
         self.get_all_output()
-        metrics_list = self.memory_metrics_reader.get_metrics_data()
-        self.assertEqual(
-            len(metrics_list.resource_metrics[0].scope_metrics), 0
-        )
+        self.assertIsNone(self.memory_metrics_reader.get_metrics_data())
 
 
 class TestAsgiAttributes(unittest.TestCase):
diff --git a/instrumentation/opentelemetry-instrumentation-celery/tests/test_metrics.py b/instrumentation/opentelemetry-instrumentation-celery/tests/test_metrics.py
index 46e39a604..e290362e7 100644
--- a/instrumentation/opentelemetry-instrumentation-celery/tests/test_metrics.py
+++ b/instrumentation/opentelemetry-instrumentation-celery/tests/test_metrics.py
@@ -68,9 +68,4 @@ class TestMetrics(TestBase):
         self.assertEqual(len(metrics), 1)
         CeleryInstrumentor().uninstrument()
 
-        metrics = self.get_metrics()
-        self.assertEqual(len(metrics), 1)
-
-        for metric in metrics:
-            for point in list(metric.data.data_points):
-                self.assertEqual(point.count, 1)
+        self.assertIsNone(self.memory_metrics_reader.get_metrics_data())
diff --git a/instrumentation/opentelemetry-instrumentation-sqlalchemy/tests/test_sqlalchemy_metrics.py b/instrumentation/opentelemetry-instrumentation-sqlalchemy/tests/test_sqlalchemy_metrics.py
index 2d753c3c4..8d8995942 100644
--- a/instrumentation/opentelemetry-instrumentation-sqlalchemy/tests/test_sqlalchemy_metrics.py
+++ b/instrumentation/opentelemetry-instrumentation-sqlalchemy/tests/test_sqlalchemy_metrics.py
@@ -56,8 +56,7 @@ class TestSqlalchemyMetricsInstrumentation(TestBase):
             pool_logging_name=pool_name,
         )
 
-        metrics = self.get_sorted_metrics()
-        self.assertEqual(len(metrics), 0)
+        self.assertIsNone(self.memory_metrics_reader.get_metrics_data())
 
         with engine.connect():
             self.assert_pool_idle_used_expected(
@@ -78,8 +77,7 @@ class TestSqlalchemyMetricsInstrumentation(TestBase):
             pool_logging_name=pool_name,
         )
 
-        metrics = self.get_sorted_metrics()
-        self.assertEqual(len(metrics), 0)
+        self.assertIsNone(self.memory_metrics_reader.get_metrics_data())
 
         with engine.connect():
             self.assert_pool_idle_used_expected(
@@ -100,8 +98,7 @@ class TestSqlalchemyMetricsInstrumentation(TestBase):
             pool_logging_name=pool_name,
         )
 
-        metrics = self.get_sorted_metrics()
-        self.assertEqual(len(metrics), 0)
+        self.assertIsNone(self.memory_metrics_reader.get_metrics_data())
 
         with engine.connect():
             with engine.connect():
@@ -122,8 +119,7 @@ class TestSqlalchemyMetricsInstrumentation(TestBase):
             pool_logging_name=pool_name,
         )
 
-        metrics = self.get_sorted_metrics()
-        self.assertEqual(len(metrics), 0)
+        self.assertIsNone(self.memory_metrics_reader.get_metrics_data())
 
         with engine.connect():
             with engine.connect():
@@ -156,5 +152,4 @@ class TestSqlalchemyMetricsInstrumentation(TestBase):
 
         engine.connect()
 
-        metrics = self.get_sorted_metrics()
-        self.assertEqual(len(metrics), 0)
+        self.assertIsNone(self.memory_metrics_reader.get_metrics_data())
diff --git a/instrumentation/opentelemetry-instrumentation-urllib/tests/test_metrics_instrumentation.py b/instrumentation/opentelemetry-instrumentation-urllib/tests/test_metrics_instrumentation.py
index f56aa4f97..d8f19f4e5 100644
--- a/instrumentation/opentelemetry-instrumentation-urllib/tests/test_metrics_instrumentation.py
+++ b/instrumentation/opentelemetry-instrumentation-urllib/tests/test_metrics_instrumentation.py
@@ -16,6 +16,9 @@
 from timeit import default_timer
 from urllib import request
 from urllib.parse import urlencode
+from pytest import mark
+from platform import python_implementation
+from sys import version_info
 
 import httpretty
 
@@ -185,16 +188,27 @@ class TestUrllibMetricsInstrumentation(TestBase):
                 ),
             )
 
+    @mark.skipif(
+        python_implementation() == "PyPy" or version_info.minor == 7,
+        reason="Fails randomly in 3.7 and pypy"
+    )
     def test_metric_uninstrument(self):
         with request.urlopen(self.URL):
             metrics = self.get_sorted_metrics()
             self.assertEqual(len(metrics), 3)
 
+            self.assertEqual(
+                metrics[0].data.data_points[0].sum, 1
+            )
+            self.assertEqual(
+                metrics[1].data.data_points[0].sum, 0
+            )
+            self.assertEqual(
+                metrics[2].data.data_points[0].sum, 6
+            )
+
             URLLibInstrumentor().uninstrument()
             with request.urlopen(self.URL):
-                metrics = self.get_sorted_metrics()
-                self.assertEqual(len(metrics), 3)
-
-                for metric in metrics:
-                    for point in list(metric.data.data_points):
-                        self.assertEqual(point.count, 1)
+                self.assertIsNone(
+                    self.memory_metrics_reader.get_metrics_data()
+                )