diff --git a/Makefile b/Makefile
index 49fe80a080..a78f635b2d 100644
--- a/Makefile
+++ b/Makefile
@@ -33,7 +33,7 @@ NODEUP=$(LOCAL)/nodeup
 UPLOAD=$(BUILD)/upload
 UID:=$(shell id -u)
 GID:=$(shell id -g)
-TESTABLE_PACKAGES:=$(shell go list ./... | egrep -v "k8s.io/kops/cloudmock|k8s.io/kops/vendor")
+TESTABLE_PACKAGES:=$(cat hack/.packages | egrep -v "k8s.io/kops/cloudmock|k8s.io/kops/vendor")
 
 # See http://stackoverflow.com/questions/18136918/how-to-get-current-relative-directory-of-your-makefile
 MAKEDIR:=$(strip $(shell dirname "$(realpath $(lastword $(MAKEFILE_LIST)))"))