diff --git a/go.mod b/go.mod
index af28491d1..8e3f20979 100644
--- a/go.mod
+++ b/go.mod
@@ -12,6 +12,6 @@ require (
 	k8s.io/client-go v0.21.4
 	knative.dev/hack v0.0.0-20210806075220-815cd312d65c
 	knative.dev/networking v0.0.0-20210914225408-69ad45454096
-	knative.dev/pkg v0.0.0-20210914164111-4857ab6939e3
+	knative.dev/pkg v0.0.0-20210917133632-a49a60e62603
 	sigs.k8s.io/yaml v1.2.0
 )
diff --git a/go.sum b/go.sum
index b1da5117b..054cf51a0 100644
--- a/go.sum
+++ b/go.sum
@@ -1349,8 +1349,9 @@ knative.dev/hack v0.0.0-20210806075220-815cd312d65c h1:nOXoDWAAItwr4o0dp3nHr6skg
 knative.dev/hack v0.0.0-20210806075220-815cd312d65c/go.mod h1:PHt8x8yX5Z9pPquBEfIj0X66f8iWkWfR0S/sarACJrI=
 knative.dev/networking v0.0.0-20210914225408-69ad45454096 h1:Zo8WfetGtm4YPtex9Wo5FQbMNvTAMVuvnlZtWcZZFm0=
 knative.dev/networking v0.0.0-20210914225408-69ad45454096/go.mod h1:nQnVhVss/mFwL6E52vS01Qo0j9/mHTi9UUoETx8BRF0=
-knative.dev/pkg v0.0.0-20210914164111-4857ab6939e3 h1:45c2VIOBQP6jpRj+pEyciuzTmBwbZpv8jBfBEf/B5oM=
 knative.dev/pkg v0.0.0-20210914164111-4857ab6939e3/go.mod h1:jMSqkNMsrzuy+XR4Yr/BMy7SDVbUOl3KKB6+5MR+ZU8=
+knative.dev/pkg v0.0.0-20210917133632-a49a60e62603 h1:dMFYeI7NI6KfHm29FyaDe+B0D1os4QZYmqp3/r+WiHU=
+knative.dev/pkg v0.0.0-20210917133632-a49a60e62603/go.mod h1:jMSqkNMsrzuy+XR4Yr/BMy7SDVbUOl3KKB6+5MR+ZU8=
 pgregory.net/rapid v0.3.3/go.mod h1:UYpPVyjFHzYBGHIxLFoupi8vwk6rXNzRY9OMvVxFIOU=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
diff --git a/vendor/knative.dev/pkg/version/version.go b/vendor/knative.dev/pkg/version/version.go
index 3cbd846ea..56b7ae958 100644
--- a/vendor/knative.dev/pkg/version/version.go
+++ b/vendor/knative.dev/pkg/version/version.go
@@ -66,8 +66,9 @@ func CheckMinimumVersion(versioner discovery.ServerVersionInterface) error {
 
 	// If no specific pre-release requirement is set, we default to "-0" to always allow
 	// pre-release versions of the same Major.Minor.Patch version.
+	// Set IsNum to true otherwise currentVersion.LT() below always returns true.
 	if len(minimumVersion.Pre) == 0 {
-		minimumVersion.Pre = []semver.PRVersion{{VersionNum: 0}}
+		minimumVersion.Pre = []semver.PRVersion{{VersionNum: 0, IsNum: true}}
 	}
 
 	// Return error if the current version is less than the minimum version required.
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 9970f2c7a..d36cec9a0 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -937,7 +937,7 @@ knative.dev/networking/test/test_images/runtime/handlers
 knative.dev/networking/test/test_images/timeout
 knative.dev/networking/test/test_images/wsserver
 knative.dev/networking/test/types
-# knative.dev/pkg v0.0.0-20210914164111-4857ab6939e3
+# knative.dev/pkg v0.0.0-20210917133632-a49a60e62603
 ## explicit
 knative.dev/pkg/apis
 knative.dev/pkg/apis/duck