diff --git a/go.mod b/go.mod
index 2da500d70..40725281b 100644
--- a/go.mod
+++ b/go.mod
@@ -17,7 +17,7 @@ require (
 	k8s.io/code-generator v0.35.4
 	k8s.io/utils v0.0.0-20251002143259-bc988d571ff4
 	knative.dev/hack v0.0.0-20260421155212-aeb7b4a9bf96
-	knative.dev/pkg v0.0.0-20260422015212-ec452872dcc1
+	knative.dev/pkg v0.0.0-20260531000007-52dbd5ece63f
 	sigs.k8s.io/yaml v1.6.0
 )
 
diff --git a/go.sum b/go.sum
index 7c3316a4c..b9be1d0aa 100644
--- a/go.sum
+++ b/go.sum
@@ -206,8 +206,8 @@ k8s.io/utils v0.0.0-20251002143259-bc988d571ff4 h1:SjGebBtkBqHFOli+05xYbK8YF1Dzk
 k8s.io/utils v0.0.0-20251002143259-bc988d571ff4/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
 knative.dev/hack v0.0.0-20260421155212-aeb7b4a9bf96 h1:YrpWTCDRzoGz0Fe7AcLTsBY+D5vx0ijhuxEVl0z3Xyw=
 knative.dev/hack v0.0.0-20260421155212-aeb7b4a9bf96/go.mod h1:L5RzHgbvam0u8QFHfzCX6MKxu/a/gIGEdaRBqNiVbl0=
-knative.dev/pkg v0.0.0-20260422015212-ec452872dcc1 h1:bO5X2bugzMqoVltm2n16mHpAdpSR0HRWeAKzHUL2Cgk=
-knative.dev/pkg v0.0.0-20260422015212-ec452872dcc1/go.mod h1:EZeB2nBW4QcpZuCPB5a/UnoVIH2N+5z5fwNw1PUeqMg=
+knative.dev/pkg v0.0.0-20260531000007-52dbd5ece63f h1:HLMi3cN9wbV9hdbu4fX6lX/VciVkAr3XLu8BL10K1E0=
+knative.dev/pkg v0.0.0-20260531000007-52dbd5ece63f/go.mod h1:EZeB2nBW4QcpZuCPB5a/UnoVIH2N+5z5fwNw1PUeqMg=
 sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 h1:IpInykpT6ceI+QxKBbEflcR5EXP7sU1kvOlxwZh5txg=
 sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730/go.mod h1:mdzfpAEoE6DHQEN0uh9ZbOCuHbLK5wOm7dK4ctXE9Tg=
 sigs.k8s.io/randfill v1.0.0 h1:JfjMILfT8A6RbawdsK2JXGBR5AQVfd+9TbzrlneTyrU=
diff --git a/vendor/knative.dev/pkg/tracker/enqueue.go b/vendor/knative.dev/pkg/tracker/enqueue.go
index 88d0254b3..f04928d3c 100644
--- a/vendor/knative.dev/pkg/tracker/enqueue.go
+++ b/vendor/knative.dev/pkg/tracker/enqueue.go
@@ -277,8 +277,8 @@ func (i *impl) GetObservers(obj interface{}) []types.NamespacedName {
 				keys = append(keys, key)
 			}
 		}
-		if len(s) == 0 {
-			delete(i.exact, ref)
+		if len(ms) == 0 {
+			delete(i.inexact, ref)
 		}
 	}
 
@@ -309,7 +309,7 @@ func (i *impl) OnDeletedObserver(obj interface{}) {
 	for ref, matchers := range i.inexact {
 		delete(matchers, key)
 		if len(matchers) == 0 {
-			delete(i.exact, ref)
+			delete(i.inexact, ref)
 		}
 	}
 }
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 378a97f2f..720a01352 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -831,7 +831,7 @@ k8s.io/utils/trace
 # knative.dev/hack v0.0.0-20260421155212-aeb7b4a9bf96
 ## explicit; go 1.24
 knative.dev/hack
-# knative.dev/pkg v0.0.0-20260422015212-ec452872dcc1
+# knative.dev/pkg v0.0.0-20260531000007-52dbd5ece63f
 ## explicit; go 1.25.0
 knative.dev/pkg/apis
 knative.dev/pkg/apis/duck