diff --git a/esphome/components/packages/__init__.py b/esphome/components/packages/__init__.py
index 56a59c54d1..2b064a90cf 100644
--- a/esphome/components/packages/__init__.py
+++ b/esphome/components/packages/__init__.py
@@ -135,7 +135,7 @@ def _process_base_package(config: dict) -> dict:
                 packages[file] = new_yaml
             except EsphomeError as e:
                 raise cv.Invalid(
-                    f"{file} is not a valid YAML file. Please check the file contents."
+                    f"{file} is not a valid YAML file. Please check the file contents.\n{e}"
                 ) from e
         return packages