diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d4a6135..5021b26 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -31,9 +31,7 @@ jobs:
         python setup.py install
     - name: Test
       run: |
-        python blosc/test.py
-      env:
-        PYTHONPATH: '.'
+        python -m blosc.test
 
   test-aarch64:
     name: "Build and test on aarch64"
diff --git a/README.rst b/README.rst
index eaa5eb4..4c571d2 100644
--- a/README.rst
+++ b/README.rst
@@ -134,9 +134,7 @@ running the doctests in ``blosc/test.py``:
 
 .. code-block:: console
 
-    $ PYTHONPATH=.   (or "set PYTHONPATH=." on Win)
-    $ export PYTHONPATH=.  (not needed on Win)
-    $ python blosc/test.py  (add -v for verbose mode)
+    $ python -m blosc.test  (add -v for verbose mode)
 
 Or alternatively, you can use the third-party ``nosetests`` script:
 
diff --git a/blosc/test.py b/blosc/test.py
index 9a38a0b..c763cc8 100644
--- a/blosc/test.py
+++ b/blosc/test.py
@@ -3,7 +3,7 @@
 import sys
 import gc
 import os
-import _version
+from ._version import LooseVersion
 import ctypes
 import blosc
 import unittest
@@ -52,7 +52,7 @@ def test_all_filters(self):
         s = b'0123456789'*100
         filters = [blosc.NOSHUFFLE, blosc.SHUFFLE]
         # BITFILTER only works properly from 1.8.0 on
-        if _version.LooseVersion(blosc.blosclib_version) >= _version.LooseVersion("1.8.0"):
+        if LooseVersion(blosc.blosclib_version) >= LooseVersion("1.8.0"):
             filters.append(blosc.BITSHUFFLE)
         for filter_ in filters:
             c = blosc.compress(s, typesize=1, shuffle=filter_)
diff --git a/blosc/toplevel.py b/blosc/toplevel.py
index 392614d..69b8f75 100644
--- a/blosc/toplevel.py
+++ b/blosc/toplevel.py
@@ -8,7 +8,7 @@
 
 import os
 import sys
-import _version
+from ._version import LooseVersion
 try:
     import cPickle as pickle
 except ImportError:
@@ -344,7 +344,7 @@ def _check_shuffle(shuffle):
         raise ValueError("shuffle can only be one of NOSHUFFLE, SHUFFLE"
                          " and BITSHUFFLE.")
     if (shuffle == blosc.BITSHUFFLE and
-        _version.LooseVersion(blosc.blosclib_version) < _version.LooseVersion("1.8.0")):
+        LooseVersion(blosc.blosclib_version) < LooseVersion("1.8.0")):
         raise ValueError("You need C-Blosc 1.8.0 or higher for using"
                          " BITSHUFFLE.")
 
diff --git a/doc/install.rst b/doc/install.rst
index 4cae7f2..dc0971f 100644
--- a/doc/install.rst
+++ b/doc/install.rst
@@ -110,9 +110,7 @@ running the doctests in ``blosc/test.py``:
 
 .. code-block:: console
 
-    $ PYTHONPATH=.   (or "set PYTHONPATH=." on Win)
-    $ export PYTHONPATH=.  (not needed on Win)
-    $ python blosc/test.py  (add -v for verbose mode)
+    $ python -m blosc.test  (add -v for verbose mode)
 
 Or alternatively, you can use the third-party ``nosetests`` script to run both
 the doctests and the test suite: