diff --git a/.travis.yml b/.travis.yml
index 1715093a..11e6586c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@ python: "3.7"
 git:
   depth: false
 before_install:
-  - pip install poetry
+  - pip install poetry~=0.12.17
 install:
   # we run `poetry version` here to appease poetry about '0.0.0-source'
   - poetry version