diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index c0adab0eb3..e9316570c4 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,15 @@
 Release Notes
 =============
 
+2.0.1: 2024/03/18
+-----------------
+
+This is a bug fix version:
+
+* `silx.io.open`: Reverted behavior: `open` locks HDF5 files (PR #4074, #4084)
+* Dependencies: Updated to advertise that `numpy` v2 is not supported (PR #4084)
+
+
 2.0.0: 2024/01/30
 -----------------
 
diff --git a/requirements.txt b/requirements.txt
index f5074bdfb1..a69d1eab5a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@
 # From pyproject.toml
 wheel
 setuptools
-numpy >= 1.12
+numpy >=1.12,<2
 Cython >= 0.21.1
 # From setup.py install_requires
 packaging
diff --git a/setup.py b/setup.py
index 75d72bc5fa..06ed4f4220 100644
--- a/setup.py
+++ b/setup.py
@@ -166,7 +166,7 @@ def get_project_configuration():
 
     install_requires = [
         # for most of the computation
-        "numpy%s" % numpy_requested_version,
+        "numpy%s,<2" % numpy_requested_version,
         # for version parsing
         "packaging",
         # for io support
diff --git a/src/silx/_version.py b/src/silx/_version.py
index 1edc9554f2..bc692ac17a 100644
--- a/src/silx/_version.py
+++ b/src/silx/_version.py
@@ -69,7 +69,7 @@
 
 MAJOR = 2
 MINOR = 0
-MICRO = 0
+MICRO = 1
 RELEV = "final"  # <16
 SERIAL = 0  # <16
 
diff --git a/src/silx/gui/hdf5/test/test_hdf5.py b/src/silx/gui/hdf5/test/test_hdf5.py
index cb08436935..1271b48a04 100755
--- a/src/silx/gui/hdf5/test/test_hdf5.py
+++ b/src/silx/gui/hdf5/test/test_hdf5.py
@@ -39,7 +39,6 @@
 from silx.gui import hdf5
 from silx.gui.utils.testutils import SignalListener
 from silx.io import commonh5
-from silx.io import h5py_utils
 from silx.io.url import DataUrl
 import weakref
 
@@ -55,7 +54,7 @@ def useH5File(request, tmpdir_factory):
     tmp = tmpdir_factory.mktemp("test_hdf5")
     request.cls.filename = os.path.join(tmp, "data.h5")
     # create h5 data
-    with h5py_utils.File(request.cls.filename, "w") as f:
+    with h5py.File(request.cls.filename, "w") as f:
         g = f.create_group("arrays")
         g.create_dataset("scalar", data=10)
     yield
@@ -87,7 +86,7 @@ def h5TempFile(self):
         fd, tmp_name = tempfile.mkstemp(suffix=".h5")
         os.close(fd)
         # create h5 data
-        h5file = h5py_utils.File(tmp_name, "w")
+        h5file = h5py.File(tmp_name, "w")
         g = h5file.create_group("arrays")
         g.create_dataset("scalar", data=10)
         h5file.close()
@@ -162,7 +161,7 @@ def testRemoveObject(self):
         self.assertEqual(model.rowCount(qt.QModelIndex()), 0)
 
     def testSynchronizeObject(self):
-        h5 = h5py_utils.File(self.filename, mode="r")
+        h5 = h5py.File(self.filename, mode="r")
         model = hdf5.Hdf5TreeModel()
         model.insertH5pyObject(h5)
         self.assertEqual(model.rowCount(qt.QModelIndex()), 1)
@@ -237,7 +236,7 @@ def testNotCloseFile(self):
         """A file inserted as an h5py object is not open (then not closed)
         internally."""
         try:
-            h5File = h5py_utils.File(self.filename, mode="r")
+            h5File = h5py.File(self.filename, mode="r")
             model = hdf5.Hdf5TreeModel()
             self.assertEqual(model.rowCount(qt.QModelIndex()), 0)
             model.insertH5pyObject(h5File)
@@ -421,7 +420,7 @@ class TestHdf5TreeModelSignals(TestCaseQt):
     def setUp(self):
         TestCaseQt.setUp(self)
         self.model = hdf5.Hdf5TreeModel()
-        self.h5 = h5py_utils.File(self.filename, mode="r")
+        self.h5 = h5py.File(self.filename, mode="r")
         self.model.insertH5pyObject(self.h5)
 
         self.listener = SignalListener()
@@ -449,7 +448,7 @@ def waitForPendingOperations(self, model):
             raise RuntimeError("Still waiting for a pending operation")
 
     def testInsert(self):
-        h5 = h5py_utils.File(self.filename, mode="r")
+        h5 = h5py.File(self.filename, mode="r")
         self.model.insertH5pyObject(h5)
         self.assertEqual(self.listener.callCount(), 0)
 
@@ -652,7 +651,7 @@ def useH5Model(request, tmpdir_factory):
     extH5FileName = os.path.join(tmp, "base__external.h5")
     extDatFileName = os.path.join(tmp, "base__external.dat")
 
-    externalh5 = h5py_utils.File(extH5FileName, mode="w")
+    externalh5 = h5py.File(extH5FileName, mode="w")
     externalh5["target/dataset"] = 50
     externalh5["target/link"] = h5py.SoftLink("/target/dataset")
     externalh5["/ext/vds0"] = [0, 1]
@@ -661,7 +660,7 @@ def useH5Model(request, tmpdir_factory):
 
     numpy.array([0, 1, 10, 10, 2, 3]).tofile(extDatFileName)
 
-    h5 = h5py_utils.File(filename, mode="w")
+    h5 = h5py.File(filename, mode="w")
     h5["group/dataset"] = 50
     h5["link/soft_link"] = h5py.SoftLink("/group/dataset")
     h5["link/soft_link_to_group"] = h5py.SoftLink("/group")
@@ -698,7 +697,7 @@ def useH5Model(request, tmpdir_factory):
         h5["/ext"].create_dataset("raw", shape=(2, 2), dtype=int, external=external)
         h5.close()
 
-    with h5py_utils.File(filename, mode="r") as h5File:
+    with h5py.File(filename, mode="r") as h5File:
         # Create model
         request.cls.model = hdf5.Hdf5TreeModel()
         request.cls.model.insertH5pyObject(h5File)
diff --git a/src/silx/io/utils.py b/src/silx/io/utils.py
index ae6a55bf5f..f15eb20b25 100644
--- a/src/silx/io/utils.py
+++ b/src/silx/io/utils.py
@@ -555,7 +555,10 @@ def _open_local_file(filename):
                 )
 
         if h5py.is_hdf5(filename):
-            return h5py_utils.File(filename, "r")
+            try:
+                return h5py.File(filename, "r")
+            except OSError:
+                return h5py.File(filename, "r", libver='latest', swmr=True)
 
         try:
             from . import fabioh5