diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index c9518eef..045004c7 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Release History
 
+## 3.0.9 (2020-06-05)
+
+**Fixed**
+
+- fix: miss formatting referenced testcase
+
+**Changed**
+
+- change: add `export` keyword in TStep to export session variables from referenced testcase
+- change: rename TestCaseInOut field, config_vars and export_vars
+- change: rename StepData field, export_vars
+
 ## 3.0.8 (2020-06-04)
 
 **Added**
diff --git a/httprunner/make.py b/httprunner/make.py
index c35f6dc4..1099a12e 100644
--- a/httprunner/make.py
+++ b/httprunner/make.py
@@ -301,7 +301,9 @@ def make_testcase(testcase: Dict, dir_path: Text = None) -> Text:
         ref_testcase_python_path = make_testcase(test_content)
 
         # prepare ref testcase class name
-        ref_testcase_cls_name = pytest_files_made_cache_mapping[ref_testcase_python_path]
+        ref_testcase_cls_name = pytest_files_made_cache_mapping[
+            ref_testcase_python_path
+        ]
         teststep["testcase"] = ref_testcase_cls_name
 
         # prepare import ref testcase
diff --git a/httprunner/runner.py b/httprunner/runner.py
index 4489c60b..d135a8f7 100644
--- a/httprunner/runner.py
+++ b/httprunner/runner.py
@@ -334,7 +334,8 @@ class HttpRunner(object):
                 duration=self.__duration,
             ),
             in_out=TestCaseInOut(
-                config_vars=self.__config.variables, export_vars=self.get_export_variables()
+                config_vars=self.__config.variables,
+                export_vars=self.get_export_variables(),
             ),
             log=self.__log_path,
             step_datas=self.__step_datas,