diff --git a/.travis.yml b/.travis.yml
index c85447c0..68cd77e6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,7 +21,7 @@
     - staticcheck $(go list ./... | grep -v vendor)
     - test -z "$(golint ./... | grep -v vendor | tee /dev/stderr)"
     - test -z "$(gofmt -s -l . | grep -v vendor | tee /dev/stderr)"
-    - make dind dtest
+    - DOCKER_API_VERSION=1.35 make dind dtest
     - make release
   deploy:
     provider: releases
diff --git a/Makefile b/Makefile
index 95add598..7425a6b8 100644
--- a/Makefile
+++ b/Makefile
@@ -172,7 +172,7 @@ dtest: ## Run the tests in a docker container
 		-e DOCKER_HOST=tcp://127.0.0.1:2375 \
 		-e DOCKER_TLS_VERIFY=true \
 		-e DOCKER_CERT_PATH=/etc/docker/ssl \
-		-e DOCKER_API_VERSION=1.35 \
+		-e DOCKER_API_VERSION \
 		$(DOCKER_IMAGE) \
 		make test