diff --git a/Gopkg.lock b/Gopkg.lock
index 74f0bfd8..fe240ed3 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -96,7 +96,7 @@
   branch = "master"
   name = "golang.org/x/crypto"
   packages = ["curve25519","ed25519","ed25519/internal/edwards25519","internal/chacha20","internal/subtle","poly1305","ssh","ssh/knownhosts","ssh/testdata"]
-  revision = "cdb2816747ef231992582a5f410b771944415b2a"
+  revision = "90ce128f82205b845596a209e55f128f7c4000ec"
   source = "https://github.com/tg123/sshpiper.crypto"
 
 [[projects]]
diff --git a/vendor/golang.org/x/crypto/ssh/sshpiper.go b/vendor/golang.org/x/crypto/ssh/sshpiper.go
index 3eeaf0b8..412ed259 100644
--- a/vendor/golang.org/x/crypto/ssh/sshpiper.go
+++ b/vendor/golang.org/x/crypto/ssh/sshpiper.go
@@ -60,7 +60,7 @@ type AuthPipe struct {
 type AdditionalChallengeContext interface {
 
 	// Chanllenger name
-	ChanllengerName() string
+	ChallengerName() string
 
 	// Meta info filled by chanllenger
 	// can be nil if no meta data
@@ -68,7 +68,7 @@ type AdditionalChallengeContext interface {
 
 	// Username used during the chanllenge
 	// Can be different from ConnMeta.User() and could be a useful hint in FindUpstream
-	ChanllengedUsername() string
+	ChallengedUsername() string
 }
 
 // PiperConfig holds SSHPiper specific configuration data.
diff --git a/vendor/golang.org/x/crypto/ssh/sshpiper_test.go b/vendor/golang.org/x/crypto/ssh/sshpiper_test.go
index 9875760c..23d6ada8 100644
--- a/vendor/golang.org/x/crypto/ssh/sshpiper_test.go
+++ b/vendor/golang.org/x/crypto/ssh/sshpiper_test.go
@@ -503,9 +503,9 @@ func TestPiperUsernameNotChangedWithinSession(t *testing.T) {
 
 type fakeChallengerContext string
 
-func (fakeChallengerContext) ChanllengerName() string       { return "" }
-func (fakeChallengerContext) Meta() interface{}             { return nil }
-func (c fakeChallengerContext) ChanllengedUsername() string { return string(c) }
+func (fakeChallengerContext) ChallengerName() string       { return "" }
+func (fakeChallengerContext) Meta() interface{}            { return nil }
+func (c fakeChallengerContext) ChallengedUsername() string { return string(c) }
 
 func TestPiperAdditionalChallenge(t *testing.T) {
 
@@ -529,8 +529,8 @@ func TestPiperAdditionalChallenge(t *testing.T) {
 		},
 		FindUpstream: func(conn ConnMetadata, challengeCtx AdditionalChallengeContext) (net.Conn, *AuthPipe, error) {
 
-			if challengeCtx.ChanllengedUsername() != "chal" {
-				t.Fatalf("challengeCtx.ChanllengedUsername changed")
+			if challengeCtx.ChallengedUsername() != "chal" {
+				t.Fatalf("challengeCtx.ChallengedUsername changed")
 			}
 
 			s, err := dialUpstream(simpleEchoHandler, &ServerConfig{NoClientAuth: true}, t)