fix pipenv issue for testing

gribok · gribok · commit 1921c6ca99a0 · 2020-03-19T22:31:52.000Z
diff --git a/.travis.yml b/.travis.yml
@@ -7,6 +7,6 @@ python:
   - "3.8"
 install:
   - "pip install pipenv"
-  - "pipenv install --dev"
+  - "pipenv install --dev --skip-lock"
 script:
   - "make test lint"
