diff --git a/test/e2e-common.sh b/test/e2e-common.sh
index edf023b4e6f..edbf6d3e7f0 100755
--- a/test/e2e-common.sh
+++ b/test/e2e-common.sh
@@ -16,8 +16,7 @@
 
 # Helper functions for E2E tests.
 
-go get -d github.com/tektoncd/plumbing
-source $(go list -m -f '{{.Dir}}' github.com/tektoncd/plumbing)/scripts/e2e-tests.sh
+source $(dirname $0)/../vendor/github.com/tektoncd/plumbing/scripts/e2e-tests.sh
 
 function teardown() {
     subheader "Tearing down Tekton Pipelines"
diff --git a/test/presubmit-tests.sh b/test/presubmit-tests.sh
index 812146930af..77435e52bcf 100755
--- a/test/presubmit-tests.sh
+++ b/test/presubmit-tests.sh
@@ -26,8 +26,7 @@
 export DISABLE_MD_LINTING=1
 export DISABLE_MD_LINK_CHECK=1
 
-go get -d github.com/tektoncd/plumbing
-source $(go list -m -f '{{.Dir}}' github.com/tektoncd/plumbing)/scripts/presubmit-tests.sh
+source $(dirname $0)/../vendor/github.com/tektoncd/plumbing/scripts/presubmit-tests.sh
 
 function post_build_tests() {
   header "running golangci-lint"