diff --git a/.gitignore b/.gitignore
index eba8e8f..6806920 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+cassettes
 client.py
 .coverage
 htmlcov
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 6c6bf80..4e67882 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -6,4 +6,5 @@ pylint
 pyproject-flake8
 pytest
 pytest-cov
+pytest-vcr
 toml
diff --git a/tests_ldpy.py b/tests_ldpy.py
index 14a7eff..cf57fdd 100644
--- a/tests_ldpy.py
+++ b/tests_ldpy.py
@@ -9,6 +9,7 @@ Author: frederic zind 2022-09-24
 Licenses: GNU AGPL v3: http://www.gnu.org/licenses/
 """
 import logging
+import pytest
 from pytest import mark, raises
 
 import ldpy
@@ -128,6 +129,7 @@ def test_get_last_entries_out_of_range(entry_np):
         ldpy.get_last_entries(entry_np)
 
 
+@pytest.mark.vcr()
 @mark.parametrize("entry_np", LAST_E_CHOICES)
 def test_get_last_entries_in_range(entry_np):
     """Value is in range for the last entries."""
@@ -146,6 +148,7 @@ def test_main_without_option():
         ldpy.main(options)
 
 
+@pytest.mark.vcr()
 def test_main_demo_with_mapping():
     """Called with mapping option.
 
@@ -157,6 +160,7 @@ def test_main_demo_with_mapping():
     assert isinstance(response, list)
 
 
+@pytest.mark.vcr()
 def test_main_demo_with_last_const():
     """Called with last option."""
     options = FakeOptions(["last"])