diff --git a/go.mod b/go.mod
index 777a04df5a..891b61ba7d 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/tektoncd/cli
 
-go 1.25.8
+go 1.26.0
 
 require (
 	github.com/AlecAivazis/survey/v2 v2.3.7
@@ -21,7 +21,7 @@ require (
 	github.com/hinshun/vt10x v0.0.0-20220228203356-1ab2cad5fd82
 	github.com/jonboulle/clockwork v0.5.0
 	github.com/ktr0731/go-fuzzyfinder v0.9.0
-	github.com/letsencrypt/boulder v0.20260420.0
+	github.com/letsencrypt/boulder v0.20260512.0
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/pkg/errors v0.9.1
 	github.com/sigstore/cosign/v2 v2.6.3
diff --git a/go.sum b/go.sum
index b45679d3ac..1b4e15969a 100644
--- a/go.sum
+++ b/go.sum
@@ -513,8 +513,8 @@ github.com/ktr0731/go-fuzzyfinder v0.9.0 h1:JV8S118RABzRl3Lh/RsPhXReJWc2q0rbuipz
 github.com/ktr0731/go-fuzzyfinder v0.9.0/go.mod h1:uybx+5PZFCgMCSDHJDQ9M3nNKx/vccPmGffsXPn2ad8=
 github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
 github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
-github.com/letsencrypt/boulder v0.20260420.0 h1:PMFy37+tQAfNe2Qks7NhTrKbULzhVmj19LbaZIaz0SE=
-github.com/letsencrypt/boulder v0.20260420.0/go.mod h1:ZisB912eU757QUU0PTH+zq2JScaegVjPVKtPn2K1U3w=
+github.com/letsencrypt/boulder v0.20260512.0 h1:f+3gqqBuN4cBK1efZzmne2ZY//zzBGrUB7cMSBcFpfA=
+github.com/letsencrypt/boulder v0.20260512.0/go.mod h1:bBspGxkkXlHEiuS5fxl9hL0DvbSiNPNw6d6ZtK4VdTg=
 github.com/liggitt/tabwriter v0.0.0-20181228230101-89fcab3d43de h1:9TO3cAIGXtEhnIaL+V+BEER86oLrvS+kWobKpbJuye0=
 github.com/liggitt/tabwriter v0.0.0-20181228230101-89fcab3d43de/go.mod h1:zAbeS9B/r2mtpb6U+EI2rYA5OAXxsYw6wTamcNW+zcE=
 github.com/lucasb-eyer/go-colorful v1.3.0 h1:2/yBRLdWBZKrf7gB40FoiKfAWYQ0lqNcbuQwVHXptag=
diff --git a/vendor/github.com/letsencrypt/boulder/core/objects.go b/vendor/github.com/letsencrypt/boulder/core/objects.go
index 5186110945..dee0e27ecd 100644
--- a/vendor/github.com/letsencrypt/boulder/core/objects.go
+++ b/vendor/github.com/letsencrypt/boulder/core/objects.go
@@ -163,6 +163,10 @@ type Challenge struct {
 	// by all challenges except dns-persist-01.
 	Token string `json:"token,omitempty"`
 
+	// AccountURI is the account URI the client includes during dns-persist-01
+	// challenge validation.
+	AccountURI string `json:"accounturi,omitempty"`
+
 	// IssuerDomainNames contains the list of issuer domain name values accepted
 	// during dns-persist-01 challenge validation.
 	IssuerDomainNames []string `json:"issuer-domain-names,omitempty"`
diff --git a/vendor/github.com/letsencrypt/boulder/core/util.go b/vendor/github.com/letsencrypt/boulder/core/util.go
index 39b72d0508..e1228fbe6b 100644
--- a/vendor/github.com/letsencrypt/boulder/core/util.go
+++ b/vendor/github.com/letsencrypt/boulder/core/util.go
@@ -402,7 +402,7 @@ func Command() string {
 }
 
 // NormalizeIssuerDomainName normalizes an RFC 8659 issuer-domain-name per the
-// recommended algorithm in draft-ietf-acme-dns-persist-00, Section 9.1.1:
+// recommended algorithm in draft-ietf-acme-dns-persist-01, Section 9.2:
 // case-fold to lowercase, apply Unicode NFC normalization, convert to A-label
 // (Punycode), remove any trailing dot, and ensure the result is no more than
 // 253 octets in length. If normalization fails, an error is returned.
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 6f7e7dba3c..3d2218ce08 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -974,8 +974,8 @@ github.com/ktr0731/go-fuzzyfinder/scoring
 ## explicit; go 1.11
 github.com/kylelemons/godebug/diff
 github.com/kylelemons/godebug/pretty
-# github.com/letsencrypt/boulder v0.20260420.0
-## explicit; go 1.25.0
+# github.com/letsencrypt/boulder v0.20260512.0
+## explicit; go 1.26.0
 github.com/letsencrypt/boulder/core
 github.com/letsencrypt/boulder/core/proto
 github.com/letsencrypt/boulder/goodkey