diff --git a/pyproject.toml b/pyproject.toml
index 6c05bdd7..db383e14 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,8 +47,6 @@ exclude_lines = [
 omit = [
   "*/__init__.py",
   "*/tests/*",
-  "*/hardware/*",
-  "*/pyzbar/*",
 ]
 skip_covered = false
 skip_empty = true
diff --git a/tests/README.md b/tests/README.md
index e948cfba..adc596c8 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -67,23 +67,17 @@ Run tests and generate test coverage
 coverage run -m pytest
 ```
 
-The screenshots have to be run separately, but they can also add to overall coverage:
-
+The screenshots can generate their own separate coverage report:
 ```bash
 coverage run -m pytest tests/screenshot_generator/generator.py --locale es
 ```
 
-Each run creates its own `.coverage.*` results file. Merge them into one result with:
-```bash
-coverage combine
-```
-
 Show the resulting test coverage details:
 ```bash
 coverage report
 ```
 
-Generate the html overview:
+Generate the interactive html report:
 ```bash
 coverage html
-```
+```
\ No newline at end of file
diff --git a/tests/run_full_coverage.sh b/tests/run_full_coverage.sh
index 0eca3f00..5df87b96 100755
--- a/tests/run_full_coverage.sh
+++ b/tests/run_full_coverage.sh
@@ -1,15 +1,19 @@
 #!/bin/bash
 
-# Run the full test suite
-coverage run -m pytest
+# Clean up any prior coverage results
+coverage erase
+
+# Run the full test suite; `--parallel` writes coverage results to a separate file
+# (otherwise it'll be overwritten in the next step)
+coverage run --parallel -m pytest
 
 # Generate screenshots (only need to run for one locale to assess coverage)
-coverage run -m pytest tests/screenshot_generator/generator.py --locale es
+coverage run --parallel -m pytest tests/screenshot_generator/generator.py --locale es
 
-# Combine the above coverage results; also cleans up any prior .coverage.* results files
+# Combine the above coverage results
 coverage combine
 
-# Show the cli report
+# Show the report in the terminal
 coverage report
 
 # Generate the interactive html report