diff --git a/cookies.go b/cookies.go
index 95c93ec..cad401e 100644
--- a/cookies.go
+++ b/cookies.go
@@ -96,6 +96,8 @@ type CookieOptions struct {
 	HTTPOnly bool
 	Secure   bool
 	MaxAge   time.Duration
+	Expires  time.Time
+	SameSite http.SameSite
 }
 
 // Set a cookie with the data set to the encrypted version of the serialization of v.
@@ -114,6 +116,8 @@ func (cm *SecureCookieManager) Set(w http.ResponseWriter, name string, opts *Coo
 		HttpOnly: opts.HTTPOnly,
 		Secure:   opts.Secure,
 		MaxAge:   int(opts.MaxAge.Seconds()),
+		Expires:  opts.Expires,
+		SameSite: opts.SameSite,
 	}
 
 	if err := cm.Encoder.Encode(v, &cookie); err != nil {
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..550b175
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,10 @@
+module github.com/doximity/cookies
+
+go 1.22.6
+
+require github.com/divoxx/goRailsYourself v0.0.0-20150818201947-3fe8d02f099f
+
+require (
+	github.com/franela/goblin v0.0.0-20211003143422-0a4f594942bf // indirect
+	golang.org/x/crypto v0.27.0 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..9e785d6
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,6 @@
+github.com/divoxx/goRailsYourself v0.0.0-20150818201947-3fe8d02f099f h1:jx31MCT3aPNLMLEYbaEg5fauKAtBmyb8iM48QxTmE98=
+github.com/divoxx/goRailsYourself v0.0.0-20150818201947-3fe8d02f099f/go.mod h1:D2BDDdHBTYnRHaA+Eo6SqJnkkyk+AfTI2Qb49UveB4E=
+github.com/franela/goblin v0.0.0-20211003143422-0a4f594942bf h1:NrF81UtW8gG2LBGkXFQFqlfNnvMt9WdB46sfdJY4oqc=
+github.com/franela/goblin v0.0.0-20211003143422-0a4f594942bf/go.mod h1:VzmDKDJVZI3aJmnRI9VjAn9nJ8qPPsN1fqzr9dqInIo=
+golang.org/x/crypto v0.27.0 h1:GXm2NjJrPaiv/h1tb2UH8QfgC/hOf/+z0p6PT8o1w7A=
+golang.org/x/crypto v0.27.0/go.mod h1:1Xngt8kV6Dvbssa53Ziq6Eqn0HqbZi5Z6R0ZpwQzt70=