diff --git a/pytest_jsonreport/plugin.py b/pytest_jsonreport/plugin.py
index 6ee4ea5..f81c9f9 100644
--- a/pytest_jsonreport/plugin.py
+++ b/pytest_jsonreport/plugin.py
@@ -244,6 +244,7 @@ def pytest_sessionfinish(self, session):
         self.report = json_report
         path = self._config.option.json_report_file
         if path:
+            path = os.path.expanduser(os.path.expandvars(path))
             try:
                 self.save_report(path)
             except OSError as e: