diff --git a/go.mod b/go.mod
index 901b1ec..ab100fc 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ require (
 	github.com/golang-jwt/jwt/v4 v4.5.0
 	github.com/notaryproject/tspclient-go v0.2.0
 	github.com/veraison/go-cose v1.3.0
-	golang.org/x/crypto v0.27.0
+	golang.org/x/crypto v0.28.0
 )
 
 require github.com/x448/float16 v0.8.4 // indirect
diff --git a/go.sum b/go.sum
index 079a5b8..e5bd21b 100644
--- a/go.sum
+++ b/go.sum
@@ -8,5 +8,5 @@ github.com/veraison/go-cose v1.3.0 h1:2/H5w8kdSpQJyVtIhx8gmwPJ2uSz1PkyWFx0idbd7r
 github.com/veraison/go-cose v1.3.0/go.mod h1:df09OV91aHoQWLmy1KsDdYiagtXgyAwAl8vFeFn1gMc=
 github.com/x448/float16 v0.8.4 h1:qLwI1I70+NjRFUR3zs1JPUCgaCXSh3SW62uAKT1mSBM=
 github.com/x448/float16 v0.8.4/go.mod h1:14CWIYCyZA/cWjXOioeEpHeN/83MdbZDRQHoFcYsOfg=
-golang.org/x/crypto v0.27.0 h1:GXm2NjJrPaiv/h1tb2UH8QfgC/hOf/+z0p6PT8o1w7A=
-golang.org/x/crypto v0.27.0/go.mod h1:1Xngt8kV6Dvbssa53Ziq6Eqn0HqbZi5Z6R0ZpwQzt70=
+golang.org/x/crypto v0.28.0 h1:GBDwsMXVQi34v5CCYUm2jkJvu4cbtru2U4TN2PSyQnw=
+golang.org/x/crypto v0.28.0/go.mod h1:rmgy+3RHxRZMyY0jjAJShp2zgEdOqj2AO7U0pYmeQ7U=