diff --git a/pyproject.toml b/pyproject.toml
index 767822f7..12271961 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,7 @@ include = ["CHANGELOG.md", "httprunner/templates/*"]
 [tool.poetry.dependencies]
 python = "~2.7 || ^3.5"
 requests = "^2.14"
-requests-toolbelt = "^0.9.1"
+requests-toolbelt = "^0.8.0"
 pyyaml = "^5.1"
 jinja2 = "^2.10"
 har2case = "^0.3.1"
@@ -43,7 +43,6 @@ ate = "httprunner.cli:main_hrun"
 httprunner = "httprunner.cli:main_hrun"
 locusts = "httprunner.cli:main_locust"
 
-# commenting for https://github.com/sdispater/poetry/issues/1049
-# [build-system]
-# requires = ["poetry>=0.12"]
-# build-backend = "poetry.masonry.api"
+[build-system]
+requires = ["poetry>=0.12"]
+build-backend = "poetry.masonry.api"