diff --git a/requirements-test.txt b/requirements-test.txt
index 5f3337c..8b41b2f 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,4 +1,4 @@
 --requirement requirements.txt
 pre-commit
 pytest
-pytest-dockerc
+python-on-whales
diff --git a/tests/conftest.py b/tests/conftest.py
index c111976..e9ab68e 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -4,15 +4,24 @@
 """
 # Third-Party Libraries
 import pytest
+from python_on_whales import docker
 
 MAIN_SERVICE_NAME = "scanner"
 
 
+@pytest.fixture(scope="session")
+def dockerc():
+    """Start up the Docker composition."""
+    docker.compose.up(detach=True)
+    yield docker
+    docker.compose.down()
+
+
 @pytest.fixture(scope="session")
 def main_container(dockerc):
     """Return the main container from the Docker composition."""
     # find the container by name even if it is stopped already
-    return dockerc.containers(service_names=[MAIN_SERVICE_NAME], stopped=True)[0]
+    return dockerc.compose.ps(services=[MAIN_SERVICE_NAME], all=True)[0]
 
 
 # See #64
@@ -23,7 +32,7 @@ def main_container(dockerc):
 #     The version container should just output the version of its underlying contents.
 #     """
 #     # find the container by name even if it is stopped already
-#     return dockerc.containers(service_names=[VERSION_SERVICE_NAME], stopped=True)[0]
+#     return dockerc.compose.ps(services=[VERSION_SERVICE_NAME], all=True)[0]
 
 
 def pytest_addoption(parser):
diff --git a/tests/container_test.py b/tests/container_test.py
index 5734f00..fb21d59 100644
--- a/tests/container_test.py
+++ b/tests/container_test.py
@@ -7,9 +7,8 @@
 def test_container_count(dockerc):
     """Verify the test composition and container."""
     # stopped parameter allows non-running containers in results
-    print(dockerc.containers)
     assert (
-        len(dockerc.containers(stopped=True)) == 2
+        len(dockerc.compose.ps(all=True)) == 2
     ), "Wrong number of containers were started."
 
 
@@ -18,7 +17,7 @@ def test_container_count(dockerc):
 #     """Wait for container to be ready."""
 #     TIMEOUT = 10
 #     for i in range(TIMEOUT):
-#         if READY_MESSAGE in main_container.logs().decode("utf-8"):
+#         if READY_MESSAGE in main_container.logs():
 #             break
 #         time.sleep(1)
 #     else:
@@ -29,19 +28,22 @@ def test_container_count(dockerc):
 
 
 # See #64
-# def test_wait_for_exits(main_container, version_container):
+# def test_wait_for_exits(dockerc, main_container, version_container):
 #     """Wait for containers to exit."""
-#     assert main_container.wait() == 0, "Container service (main) did not exit cleanly"
 #     assert (
-#         version_container.wait() == 0
+#         dockerc.wait(main_container.id) == 0
+#     ), "Container service (main) did not exit cleanly"
+#     assert (
+#         dockerc.wait(version_container.id) == 0
 #     ), "Container service (version) did not exit cleanly"
 
 
 # See #64
-# def test_output(main_container):
+# def test_output(dockerc, main_container):
 #     """Verify the container had the correct output."""
-#     main_container.wait()  # make sure container exited if running test isolated
-#     log_output = main_container.logs().decode("utf-8")
+#     # make sure container exited if running test isolated
+#     dockerc.wait(main_container.id)
+#     log_output = main_container.logs()
 #     assert SECRET_QUOTE in log_output, "Secret not found in log output."
 
 
@@ -61,10 +63,11 @@ def test_container_count(dockerc):
 
 
 # See #64
-# def test_log_version(version_container):
+# def test_log_version(dockerc, version_container):
 #     """Verify the container outputs the correct version to the logs."""
-#     version_container.wait()  # make sure container exited if running test isolated
-#     log_output = version_container.logs().decode("utf-8").strip()
+#     # make sure container exited if running test isolated
+#     dockerc.wait(version_container.id)
+#     log_output = version_container.logs().strip()
 #     pkg_vars = {}
 #     with open(VERSION_FILE) as f:
 #         exec(f.read(), pkg_vars)  # nosec
@@ -82,5 +85,6 @@ def test_container_count(dockerc):
 #         exec(f.read(), pkg_vars)  # nosec
 #     project_version = pkg_vars["__version__"]
 #     assert (
-#         version_container.labels["org.opencontainers.image.version"] == project_version
+#         version_container.config.labels["org.opencontainers.image.version"]
+#         == project_version
 #     ), "Dockerfile version label does not match project version"