diff --git a/scripts/library.sh b/scripts/library.sh
index 63fa4acc1a..5db0280cd4 100755
--- a/scripts/library.sh
+++ b/scripts/library.sh
@@ -27,7 +27,7 @@ readonly KNATIVE_BASE_YAML_SOURCE=https://storage.googleapis.com/knative-nightly
 readonly KNATIVE_ISTIO_CRD_YAML=${KNATIVE_BASE_YAML_SOURCE/@/serving}/istio-crds.yaml
 readonly KNATIVE_ISTIO_YAML=${KNATIVE_BASE_YAML_SOURCE/@/serving}/istio.yaml
 readonly KNATIVE_SERVING_RELEASE=${KNATIVE_BASE_YAML_SOURCE/@/serving}/serving.yaml
-readonly KNATIVE_BUILD_RELEASE=${KNATIVE_BASE_YAML_SOURCE/@/build}/release.yaml
+readonly KNATIVE_BUILD_RELEASE=${KNATIVE_BASE_YAML_SOURCE/@/build}/build.yaml
 readonly KNATIVE_EVENTING_RELEASE=${KNATIVE_BASE_YAML_SOURCE/@/eventing}/release.yaml
 
 # Conveniently set GOPATH if unset