diff --git a/httprunner/loader.py b/httprunner/loader.py
index 07761bcf..0c24315c 100644
--- a/httprunner/loader.py
+++ b/httprunner/loader.py
@@ -191,10 +191,11 @@ def load_dot_env_file():
     env_variables_mapping = {}
     with io.open(path, 'r', encoding='utf-8') as fp:
         for line in fp:
+            # maxsplit=1
             if "=" in line:
-                variable, value = line.split("=", maxsplit=1)
+                variable, value = line.split("=", 1)
             elif ":" in line:
-                variable, value = line.split(":", maxsplit=1)
+                variable, value = line.split(":", 1)
             else:
                 raise exceptions.FileFormatError(".env format error")
 
diff --git a/tests/test_api.py b/tests/test_api.py
index 010d2ec8..9484c50a 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -173,7 +173,7 @@ class TestHttpRunner(ApiServerUnittest):
         end_time = time.time()
         summary = runner.summary
         self.assertTrue(summary["success"])
-        self.assertLess(end_time - start_time, 20)
+        self.assertLess(end_time - start_time, 60)
 
     def test_run_httprunner_with_teardown_hooks_alter_response(self):
         testcases = [
diff --git a/tests/test_response.py b/tests/test_response.py
index bc02ebd5..c54058ae 100644
--- a/tests/test_response.py
+++ b/tests/test_response.py
@@ -136,7 +136,7 @@ class TestResponse(ApiServerUnittest):
         ]
         extract_binds_dict = resp_obj.extract_response(extract_binds_list)
         self.assertGreater(extract_binds_dict["resp_elapsed_microseconds"], 1000)
-        self.assertLess(extract_binds_dict["resp_elapsed_seconds"], 10)
+        self.assertLess(extract_binds_dict["resp_elapsed_seconds"], 60)
         self.assertEqual(extract_binds_dict["resp_elapsed_days"], 0)
         self.assertGreater(extract_binds_dict["resp_elapsed_total_seconds"], 0)