diff --git a/conda_pip/dependencies.py b/conda_pip/dependencies.py
index 42b3889..856463f 100644
--- a/conda_pip/dependencies.py
+++ b/conda_pip/dependencies.py
@@ -21,7 +21,7 @@
 keep_refs_alive = []
 
 
-def analyze_dependencies(*packages: str, prefer_on_conda=True, channel="conda-forge"):
+def analyze_dependencies(*packages: str, prefer_on_conda=True, channel="conda-forge", backend="grayskull"):
     conda_deps = defaultdict(list)
     pypi_deps = defaultdict(list)
     for package in packages:
diff --git a/tests/test_validate.py b/tests/test_validate.py
index ada23f0..65507e4 100644
--- a/tests/test_validate.py
+++ b/tests/test_validate.py
@@ -18,15 +18,18 @@ def test_pip_required_in_target_env(tmp_env: TmpEnvFixture, conda_cli: CondaCLIF
         out, err, rc = conda_cli("install", "-p", prefix, "--yes", "python=3.9")
         PrefixData._cache_.clear()  # clear cache to force re-read of prefix
         assert package_is_installed(str(prefix), "python=3.9")
+        assert not package_is_installed(str(prefix), "pip")
+        PrefixData._cache_.clear()
 
         with pytest.raises(CondaError, match="does not have pip installed"):
             out, err, rc = conda_cli(*args)
         out, err, rc = conda_cli("install", "-p", prefix, "--yes", "pip")
         PrefixData._cache_.clear()  # clear cache to force re-read of prefix
         assert package_is_installed(str(prefix), "pip")
+        PrefixData._cache_.clear()
         
         out, err, rc = conda_cli(*args)
-        PrefixData._cache_.clear()  # clear cache to force re-read of prefix
+        PrefixData._cache_.clear()
         assert rc == 0
         assert package_is_installed(str(prefix), "requests")
     monkeypatch.undo()