diff --git a/chapter-C.34-sso-saml-sp/go.mod b/chapter-C.34-sso-saml-sp/go.mod
index 1bb3093..1b957b9 100644
--- a/chapter-C.34-sso-saml-sp/go.mod
+++ b/chapter-C.34-sso-saml-sp/go.mod
@@ -12,5 +12,5 @@ require (
 	github.com/mattermost/xml-roundtrip-validator v0.1.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/russellhaering/goxmldsig v1.3.0 // indirect
-	golang.org/x/crypto v0.14.0 // indirect
+	golang.org/x/crypto v0.17.0 // indirect
 )
diff --git a/chapter-C.34-sso-saml-sp/go.sum b/chapter-C.34-sso-saml-sp/go.sum
index e91f360..dc171bf 100644
--- a/chapter-C.34-sso-saml-sp/go.sum
+++ b/chapter-C.34-sso-saml-sp/go.sum
@@ -34,8 +34,8 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
-golang.org/x/crypto v0.14.0 h1:wBqGXzWJW6m1XrIKlAH0Hs1JJ7+9KBwnIO8v66Q9cHc=
-golang.org/x/crypto v0.14.0/go.mod h1:MVFd36DqK4CsrnJYDkBA3VC4m2GkXAM0PvzMCn4JQf4=
+golang.org/x/crypto v0.17.0 h1:r8bRNjWL3GshPW3gkd+RpvzWrZAwPS49OmTGZ/uhM4k=
+golang.org/x/crypto v0.17.0/go.mod h1:gCAAfMLgwOJRpTjQ2zCCt2OcSfYMTeZVSRtQlPC7Nq4=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=