diff --git a/.gitignore b/.gitignore
index 6478ff33c6..0562c417f5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -99,3 +99,7 @@ testing_support/google_appengine
 
 # Ignore gemini-cli configs
 /.gemini/
+
+# Ignore coverage results file and htlp folder.
+.coverage
+htmlcov/
\ No newline at end of file
diff --git a/.vpython3 b/.vpython3
index f115dc044d..b8fe444913 100644
--- a/.vpython3
+++ b/.vpython3
@@ -101,4 +101,10 @@ wheel: <
 wheel: <
   name: "infra/python/wheels/lxml/${vpython_platform}"
   version: "version:4.9.3"
+>
+
+# To be used by developers running unit test coverage.
+wheel: <
+  name: "infra/python/wheels/coverage-py3"
+  version: "version:7.13.0"
 >
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
index 130a86b850..7230f0cb9b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,3 +2,6 @@
 venvPath = 'recipes/.recipe_deps/_venv'
 venv = 'normal'
 extraPaths = ['recipes/.recipe_deps/_path']
+
+[tool.coverage.run]
+disable_warnings = ["no-ctracer"]
\ No newline at end of file