diff --git a/param/parameterized.py b/param/parameterized.py
index 975ed840..57703ae4 100644
--- a/param/parameterized.py
+++ b/param/parameterized.py
@@ -26,7 +26,7 @@
 # Allow this file to be used standalone if desired, albeit without JSON serialization
 try:
     from . import serializer
-except ImportError:
+except ModuleNotFoundError:
     serializer = None
 
 from collections import defaultdict, namedtuple, OrderedDict
@@ -67,7 +67,7 @@
     try:
         from .ipython import ParamPager, ipython_async_executor as async_executor
         param_pager = ParamPager(metaclass=True)  # Generates param description
-    except ImportError:
+    except ModuleNotFoundError:
         from ._utils import async_executor
 else:
     from ._utils import async_executor
diff --git a/param/version.py b/param/version.py
index 34b86b54..5f62ff95 100644
--- a/param/version.py
+++ b/param/version.py
@@ -519,7 +519,7 @@ def get_setupcfg_version():
     """
     try:
         import configparser
-    except ImportError:
+    except ModuleNotFoundError:
         import ConfigParser as configparser # python2 (also prevents dict-like access)
     import re
     cfg = "setup.cfg"
diff --git a/tests/testcomparator.py b/tests/testcomparator.py
index 92d4e90f..20faf522 100644
--- a/tests/testcomparator.py
+++ b/tests/testcomparator.py
@@ -7,11 +7,11 @@
 
 try:
     import numpy as np
-except ImportError:
+except ModuleNotFoundError:
     np = None
 try:
     import pandas as pd
-except ImportError:
+except ModuleNotFoundError:
     pd = None
 
 _now = datetime.datetime.now()
diff --git a/tests/testdateparam.py b/tests/testdateparam.py
index 298a4e6e..e0ca5e36 100644
--- a/tests/testdateparam.py
+++ b/tests/testdateparam.py
@@ -11,7 +11,7 @@
 
 try:
     import numpy as np
-except ImportError:
+except ModuleNotFoundError:
     np = None
 
 from .utils import check_defaults
diff --git a/tests/testdaterangeparam.py b/tests/testdaterangeparam.py
index e86778f4..6fb43a5e 100644
--- a/tests/testdaterangeparam.py
+++ b/tests/testdaterangeparam.py
@@ -12,7 +12,7 @@
 
 try:
     import numpy as np
-except ImportError:
+except ModuleNotFoundError:
     np = None
 
 # Assuming tests of range parameter cover most of what's needed to
diff --git a/tests/testdefaults.py b/tests/testdefaults.py
index fc14c319..8cad0104 100644
--- a/tests/testdefaults.py
+++ b/tests/testdefaults.py
@@ -23,11 +23,11 @@
 
 try:
     import numpy # noqa
-except ImportError:
+except ModuleNotFoundError:
     skip.append('Array')
 try:
     import pandas # noqa
-except ImportError:
+except ModuleNotFoundError:
     skip.append('DataFrame')
     skip.append('Series')
 
diff --git a/tests/testfiledeserialization.py b/tests/testfiledeserialization.py
index b00f1e8e..adf4fcc0 100644
--- a/tests/testfiledeserialization.py
+++ b/tests/testfiledeserialization.py
@@ -20,19 +20,19 @@
     pd_ver = pd.__version__.split('.')
     df = pd.DataFrame({'A':[1,2,3], 'B':[1.1,2.2,3.3]})
     modern_pd = pd if (int(pd_ver[0]) >= 1 and int(pd_ver[1]) >= 2) else None
-except ImportError:
+except ModuleNotFoundError:
     pd = df1 = df2 = modern_pd = None
 
 # The writer could be xlsxwriter, but the sufficient condition is the presence of
 # openpyxl
 try:
     import openpyxl as xlsxm
-except ImportError:
+except ModuleNotFoundError:
     xlsxm = None
 
 try:
     import odf as ods
-except ImportError:
+except ModuleNotFoundError:
     ods = None
 
 # prior to pandas version 1.2, xlrd was always the default excel reader (though it
@@ -42,27 +42,27 @@
     import xlrd as xls
     if int(xls.__version__.split('.')[0]) > 2:
         raise Exception()
-except ImportError:
+except ModuleNotFoundError:
     if modern_pd is None:
         xlsxm = None
 
 try:
     import pyarrow.feather as feather
-except ImportError:
+except ModuleNotFoundError:
     feather = None
 
 try:
     import fastparquet as parquet
-except ImportError:
+except ModuleNotFoundError:
     parquet = None
 try:
     import pyarrow as parquet
-except ImportError:
+except ModuleNotFoundError:
     pass
 
 try:
     import tables as hdf5
-except ImportError:
+except ModuleNotFoundError:
     hdf5 = None
 
 np_skip = skipIf(np is None, "NumPy is not available")
diff --git a/tests/testipythonmagic.py b/tests/testipythonmagic.py
index 2a1e68da..9c9a2e4f 100644
--- a/tests/testipythonmagic.py
+++ b/tests/testipythonmagic.py
@@ -9,7 +9,7 @@
 
 try:
     import IPython # noqa
-except ImportError:
+except ModuleNotFoundError:
     import os
     if os.getenv('PARAM_TEST_IPYTHON','0') == '1':
         raise ImportError("PARAM_TEST_IPYTHON=1 but ipython not available.")
diff --git a/tests/testjsonserialization.py b/tests/testjsonserialization.py
index 103f3cba..e11dc63c 100644
--- a/tests/testjsonserialization.py
+++ b/tests/testjsonserialization.py
@@ -11,7 +11,7 @@
 
 try:
     from jsonschema import validate, ValidationError
-except ImportError:
+except ModuleNotFoundError:
     import os
     if os.getenv('PARAM_TEST_JSONSCHEMA','0') == '1':
         raise ImportError("PARAM_TEST_JSONSCHEMA=1 but jsonschema not available.")
@@ -25,7 +25,7 @@
     ndarray = np.array([[1,2,3],[4,5,6]])
     npdt1 = np.datetime64(now)
     npdt2 = np.datetime64(after_now)
-except ImportError:
+except ModuleNotFoundError:
     np, ndarray, npdt1, npdt2 = None, None, None, None
 
 np_skip = skipIf(np is None, "NumPy is not available")
@@ -36,7 +36,7 @@
     df2 = pd.DataFrame({'A':[1.1,2.2,3.3], 'B':[1.1,2.2,3.3]})
     pdts1 = pd.Timestamp(now)
     pdts2 = pd.Timestamp(after_now)
-except ImportError:
+except ModuleNotFoundError:
     pd, df1, df2, pdts1, pdts2 = None, None, None, None, None
 
 pd_skip = skipIf(pd is None, "pandas is not available")
diff --git a/tests/testnumberparameter.py b/tests/testnumberparameter.py
index a796d2e7..56f2d34c 100644
--- a/tests/testnumberparameter.py
+++ b/tests/testnumberparameter.py
@@ -10,7 +10,7 @@
 
 try:
     import numpy as np
-except ImportError:
+except ModuleNotFoundError:
     np = None
 
 class TestNumberParameters(unittest.TestCase):
diff --git a/tests/testnumpy.py b/tests/testnumpy.py
index 9367e058..3bc47d25 100644
--- a/tests/testnumpy.py
+++ b/tests/testnumpy.py
@@ -11,7 +11,7 @@
 try:
     import numpy
     import numpy.testing
-except ImportError:
+except ModuleNotFoundError:
     if os.getenv('PARAM_TEST_NUMPY','0') == '1':
         raise ImportError("PARAM_TEST_NUMPY=1 but numpy not available.")
     else:
diff --git a/tests/testpandas.py b/tests/testpandas.py
index 38134e22..6227cded 100644
--- a/tests/testpandas.py
+++ b/tests/testpandas.py
@@ -12,7 +12,7 @@
 
 try:
     import pandas
-except ImportError:
+except ModuleNotFoundError:
     if os.getenv('PARAM_TEST_PANDAS','0') == '1':
         raise ImportError("PARAM_TEST_PANDAS=1 but pandas not available.")
     else:
diff --git a/tests/testpickle.py b/tests/testpickle.py
index 31fc8c64..cafe0d76 100644
--- a/tests/testpickle.py
+++ b/tests/testpickle.py
@@ -5,15 +5,15 @@
 
 try:
     import cloudpickle
-except ImportError:
+except ModuleNotFoundError:
     cloudpickle = None
 try:
     import numpy as np
-except ImportError:
+except ModuleNotFoundError:
     np = None
 try:
     import pandas as pd
-except ImportError:
+except ModuleNotFoundError:
     pd = None
 
 
diff --git a/tests/testreactive.py b/tests/testreactive.py
index 68e6b9ee..c4fff0f1 100644
--- a/tests/testreactive.py
+++ b/tests/testreactive.py
@@ -7,7 +7,7 @@
 
 try:
     import numpy as np
-except ImportError:
+except ModuleNotFoundError:
     if os.getenv('PARAM_TEST_NUMPY','0') == '1':
         raise ImportError("PARAM_TEST_NUMPY=1 but numpy not available.")
     else:
@@ -15,7 +15,7 @@
 
 try:
     import pandas as pd
-except ImportError:
+except ModuleNotFoundError:
     if os.getenv('PARAM_TEST_PANDAS','0') == '1':
         raise ImportError("PARAM_TEST_PANDAS=1 but pandas not available.")
     else:
diff --git a/tests/testtimedependent.py b/tests/testtimedependent.py
index d77a66e9..85cdeadd 100644
--- a/tests/testtimedependent.py
+++ b/tests/testtimedependent.py
@@ -13,7 +13,7 @@
 
 try:
     import gmpy
-except ImportError:
+except ModuleNotFoundError:
     import os
     if os.getenv('PARAM_TEST_GMPY','0') == '1':
         raise ImportError("PARAM_TEST_GMPY=1 but gmpy not available.")
diff --git a/tests/testtupleparam.py b/tests/testtupleparam.py
index 3fa5e415..15f2905b 100644
--- a/tests/testtupleparam.py
+++ b/tests/testtupleparam.py
@@ -8,7 +8,7 @@
 
 try:
     import numpy as np
-except ImportError:
+except ModuleNotFoundError:
     np = None
 
 
diff --git a/tests/testutils.py b/tests/testutils.py
index 4fbe2eda..d060a314 100644
--- a/tests/testutils.py
+++ b/tests/testutils.py
@@ -14,12 +14,12 @@
 
 try:
     import numpy as np
-except ImportError:
+except ModuleNotFoundError:
     np = None
 
 try:
     import pandas as pd
-except ImportError:
+except ModuleNotFoundError:
     pd = None
 
 now = dt.datetime.now()