diff --git a/.buildkite/pipeline.yml b/.buildkite/pipeline.yml
index ff05a7428b..f79aaf9c88 100644
--- a/.buildkite/pipeline.yml
+++ b/.buildkite/pipeline.yml
@@ -55,7 +55,7 @@ steps:
     label: ":mypy: mypy"
     plugins:
       - docker#v3.0.1:
-          image: "python:3.5"
+          image: "python:3.7"
           mount-buildkite-agent: false
 
   - wait