diff --git a/go.mod b/go.mod
index d26fa15d39..dcbf3739b2 100644
--- a/go.mod
+++ b/go.mod
@@ -46,7 +46,7 @@ require (
 	k8s.io/gengo/v2 v2.0.0-20250922181213-ec3ebc5fd46b
 	k8s.io/klog/v2 v2.130.1
 	k8s.io/utils v0.0.0-20251002143259-bc988d571ff4
-	knative.dev/hack v0.0.0-20260415132636-9909d690ab4d
+	knative.dev/hack v0.0.0-20260415233235-54d1312ccc91
 	sigs.k8s.io/randfill v1.0.0
 	sigs.k8s.io/yaml v1.6.0
 )
diff --git a/go.sum b/go.sum
index 68e114fda6..42447dd460 100644
--- a/go.sum
+++ b/go.sum
@@ -249,8 +249,8 @@ k8s.io/kube-openapi v0.0.0-20250910181357-589584f1c912 h1:Y3gxNAuB0OBLImH611+UDZ
 k8s.io/kube-openapi v0.0.0-20250910181357-589584f1c912/go.mod h1:kdmbQkyfwUagLfXIad1y2TdrjPFWp2Q89B3qkRwf/pQ=
 k8s.io/utils v0.0.0-20251002143259-bc988d571ff4 h1:SjGebBtkBqHFOli+05xYbK8YF1Dzkbzn+gDM4X9T4Ck=
 k8s.io/utils v0.0.0-20251002143259-bc988d571ff4/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
-knative.dev/hack v0.0.0-20260415132636-9909d690ab4d h1:ckrA4ssLeQF0dKfvL8Do9IKR+5tHE9Oiy1eNx+3YNz8=
-knative.dev/hack v0.0.0-20260415132636-9909d690ab4d/go.mod h1:L5RzHgbvam0u8QFHfzCX6MKxu/a/gIGEdaRBqNiVbl0=
+knative.dev/hack v0.0.0-20260415233235-54d1312ccc91 h1:YkboMEJ48h7DxRQSPe2SePm1yKK0YYgrsQW5Mmc0SEk=
+knative.dev/hack v0.0.0-20260415233235-54d1312ccc91/go.mod h1:L5RzHgbvam0u8QFHfzCX6MKxu/a/gIGEdaRBqNiVbl0=
 pgregory.net/rapid v1.1.0 h1:CMa0sjHSru3puNx+J0MIAuiiEV4N0qj8/cMWGBBCsjw=
 pgregory.net/rapid v1.1.0/go.mod h1:PY5XlDGj0+V1FCq0o192FdRhpKHGTRIWBgqjDBTrq04=
 sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 h1:IpInykpT6ceI+QxKBbEflcR5EXP7sU1kvOlxwZh5txg=
diff --git a/vendor/knative.dev/hack/e2e-tests.sh b/vendor/knative.dev/hack/e2e-tests.sh
index 331511cc41..426c1cd93b 100644
--- a/vendor/knative.dev/hack/e2e-tests.sh
+++ b/vendor/knative.dev/hack/e2e-tests.sh
@@ -54,10 +54,14 @@ function setup_test_cluster() {
   header "Setting up test cluster"
   kubectl get nodes
 
-  # Set the actual project the test cluster resides in
-  # It will be a project assigned by Boskos if test is running on Prow,
-  # otherwise will be ${E2E_GCP_PROJECT_ID} set up by user.
-  E2E_PROJECT_ID="$(gcloud config get-value project)"
+  # Set the actual project the test cluster resides in. For GKE this
+  # comes from the Boskos-configured gcloud context; for other
+  # providers (e.g. kind) it is not meaningful and is left empty.
+  if [[ "${CLOUD_PROVIDER}" == "gke" ]]; then
+    E2E_PROJECT_ID="$(gcloud config get-value project)"
+  else
+    E2E_PROJECT_ID=""
+  fi
   export E2E_PROJECT_ID
   readonly E2E_PROJECT_ID
 
diff --git a/vendor/knative.dev/hack/infra-library.sh b/vendor/knative.dev/hack/infra-library.sh
index e74b839e91..db364ed894 100644
--- a/vendor/knative.dev/hack/infra-library.sh
+++ b/vendor/knative.dev/hack/infra-library.sh
@@ -84,7 +84,8 @@ function dump_cluster_state() {
 # Create a test cluster and run the tests if provided.
 # Parameters: $1 - cluster provider name, e.g. gke
 #             $2 - custom flags supported by kntest
-#             $3 - test command to run after cluster is created
+#             $3 - extra gcloud flags (gke only)
+#             $4 - test command to run after cluster is created
 function create_test_cluster() {
   # Fail fast during setup.
   set -o errexit
@@ -96,7 +97,7 @@ function create_test_cluster() {
 
   case "$1" in
     gke) create_gke_test_cluster "$2" "$3" "$4" "${5:-}" ;;
-    kind) create_kind_test_cluster "$2" "$3" "${4:-}" ;;
+    kind) create_kind_test_cluster "$2" "${4:-}" ;;
     *) echo "unsupported provider: $1"; exit 1 ;;
   esac
 
diff --git a/vendor/knative.dev/hack/library.sh b/vendor/knative.dev/hack/library.sh
index 2dbe5a7a06..6eb5667958 100644
--- a/vendor/knative.dev/hack/library.sh
+++ b/vendor/knative.dev/hack/library.sh
@@ -922,7 +922,10 @@ function run_kntest() {
 
 # Run go-licenses to check for forbidden licenses.
 function check_licenses() {
-  # Check that we don't have any forbidden licenses.
+  # Pin GOTOOLCHAIN to the project's Go version so that go-licenses is
+  # compiled with the same toolchain.  GOTOOLCHAIN=auto (the go_run default)
+  # may select a different Go, causing isStdLib() path mismatches.
+  GOTOOLCHAIN="$(go env GOVERSION)" \
   go_run github.com/google/go-licenses/v2@v2.0.1 \
     check "${REPO_ROOT_DIR}/..." || \
     { echo "--- FAIL: go-licenses failed the license check"; return 1; }
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 247742aa6a..ea1741b38d 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -1068,7 +1068,7 @@ k8s.io/utils/lru
 k8s.io/utils/net
 k8s.io/utils/ptr
 k8s.io/utils/trace
-# knative.dev/hack v0.0.0-20260415132636-9909d690ab4d
+# knative.dev/hack v0.0.0-20260415233235-54d1312ccc91
 ## explicit; go 1.24
 knative.dev/hack
 # sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730