diff --git a/Makefile b/Makefile
index e8d1febab..417c7fef9 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 DOKKU_VERSION ?= master
 
 DOCKER_IMAGE_LABELER_VERSION ?= 0.2.2
-HEROKUISH_VERSION ?= 0.5.19
+HEROKUISH_VERSION ?= 0.5.25
 PLUGN_VERSION ?= 0.6.1
 PROCFILE_VERSION ?= 0.11.0
 SIGIL_VERSION ?= 0.6.0
diff --git a/tests/apps/python/.buildpacks b/tests/apps/python/.buildpacks
deleted file mode 100644
index b86e298c6..000000000
--- a/tests/apps/python/.buildpacks
+++ /dev/null
@@ -1 +0,0 @@
-https://github.com/dokku/buildpack-null.git