diff --git a/pyproject.toml b/pyproject.toml
index 9a79e555..51f6e850 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,3 +18,7 @@ pythonVersion = "3.7"
 include = ["src"]
 extraPaths = ["src/debugpy/_vendored/pydevd"]
 ignore = ["src/debugpy/_vendored/pydevd", "src/debugpy/_version.py"]
+executionEnvironments = [
+  { root = "src" }
+]
+