diff --git a/tests/conftest.py b/tests/conftest.py
index 2479685..a35c4a5 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -6,6 +6,12 @@
 from nbautoexport.utils import JupyterNotebook
 
 
+@pytest.fixture(autouse=True)
+def disable_typer_rich_colors(monkeypatch):
+    # https://rich.readthedocs.io/en/stable/console.html#environment-variables
+    monkeypatch.setenv("TERM", "unknown")
+
+
 @pytest.fixture(scope="session")
 def notebook_asset():
     return JupyterNotebook.from_file(Path(__file__).parent / "assets" / "the_notebook.ipynb")
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 9895f9d..12a9265 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -13,7 +13,8 @@ def test_no_command():
     runner = CliRunner()
     result = runner.invoke(app)
     assert result.exit_code > 0
-    assert "Error: Missing command." in result.output
+    assert "Error" in result.output
+    assert "Missing command." in result.output
 
 
 def test_help():
@@ -41,7 +42,8 @@ def test_no_command_python_m():
         universal_newlines=True,
     )
     assert result.returncode > 0
-    assert "Error: Missing command." in result.stderr
+    assert "Error" in result.stderr
+    assert "Missing command." in result.stderr
     assert result.stderr.startswith("Usage: python -m nbautoexport")
     assert "Usage: __main__.py" not in result.stderr
 
diff --git a/tests/test_cli_clean.py b/tests/test_cli_clean.py
index 29ad050..3d2f74b 100644
--- a/tests/test_cli_clean.py
+++ b/tests/test_cli_clean.py
@@ -206,7 +206,7 @@ def test_clean_abort(notebooks_dir):
 
     result = CliRunner().invoke(app, ["clean", str(notebooks_dir)], input="n")
     assert result.exit_code == 1
-    assert result.stdout.endswith("Aborted!\n")
+    assert result.stdout.strip().endswith("Aborted.")
 
     ending_files = set(notebooks_dir.glob("**/*"))
 
@@ -234,7 +234,8 @@ def test_clean_no_directory_error():
     result = CliRunner().invoke(app, ["clean"])
 
     assert result.exit_code == 2
-    assert "Error: Missing argument 'DIRECTORY'." in result.stdout
+    assert "Error" in result.stdout
+    assert "Missing argument 'DIRECTORY'." in result.stdout
 
 
 def test_clean_missing_config_error(notebooks_dir):
@@ -244,7 +245,8 @@ def test_clean_missing_config_error(notebooks_dir):
 
     result = CliRunner().invoke(app, ["clean", str(notebooks_dir)])
     assert result.exit_code == 1
-    assert "Error: Missing expected nbautoexport config file" in result.stdout
+    assert "Error" in result.stdout
+    assert "Missing expected nbautoexport config file" in result.stdout
     assert str(sentinel_path.resolve()) in result.stdout
 
     ending_files = set(notebooks_dir.glob("**/*"))
diff --git a/tests/test_cli_configure.py b/tests/test_cli_configure.py
index abd8eeb..411ad01 100644
--- a/tests/test_cli_configure.py
+++ b/tests/test_cli_configure.py
@@ -64,7 +64,8 @@ def test_invalid_export_format():
     runner = CliRunner()
     result = runner.invoke(app, ["configure", "-f", "invalid-output-format"])
     assert result.exit_code == 2
-    assert "Error: Invalid value for '--export-format' / '-f'" in result.output
+    assert "Error" in result.output
+    assert "Invalid value for '--export-format' / '-f'" in result.output
     assert "invalid-output-format" in result.output
 
 
@@ -152,4 +153,5 @@ def test_configure_no_directory_error():
     result = CliRunner().invoke(app, ["configure"])
 
     assert result.exit_code == 2
-    assert "Error: Missing argument 'DIRECTORY'." in result.stdout
+    assert "Error" in result.stdout
+    assert "Missing argument 'DIRECTORY'." in result.stdout
diff --git a/tests/test_cli_export.py b/tests/test_cli_export.py
index c79a140..1cd5e65 100644
--- a/tests/test_cli_export.py
+++ b/tests/test_cli_export.py
@@ -1,5 +1,6 @@
 from itertools import chain, product
 from pathlib import Path
+import re
 import shutil
 
 import pytest
@@ -225,11 +226,12 @@ def test_export_notebook_doesnt_exist_error(tmp_path):
     assert not nonexistent_notebook.exists()
     result = CliRunner().invoke(app, ["export", str(nonexistent_notebook)])
     assert result.exit_code == 2
-    assert "does not exist" in result.stdout
+    assert re.search("does[^a-zA-Z]+not[^a-zA-Z]+exist", result.stdout)
 
 
 def test_export_no_input_error():
     result = CliRunner().invoke(app, ["export"])
 
     assert result.exit_code == 2
-    assert "Error: Missing argument 'INPUT'." in result.stdout
+    assert "Error" in result.stdout
+    assert "Missing argument 'INPUT'." in result.stdout