diff --git a/webapp/golang/go.mod b/webapp/golang/go.mod
index 3d5424a0..e43ac866 100644
--- a/webapp/golang/go.mod
+++ b/webapp/golang/go.mod
@@ -1,13 +1,15 @@
 module github.com/catatsuy/private-isu/webapp/golang
 
-go 1.22.2
+go 1.23
+
+toolchain go1.23.0
 
 require (
 	github.com/bradfitz/gomemcache v0.0.0-20230905024940-24af94b03874
 	github.com/bradleypeabody/gorilla-sessions-memcache v0.0.0-20181103040241-659414f458e1
 	github.com/go-chi/chi/v5 v5.1.0
 	github.com/go-sql-driver/mysql v1.8.1
-	github.com/gorilla/sessions v1.3.0
+	github.com/gorilla/sessions v1.4.0
 	github.com/jmoiron/sqlx v1.4.0
 )
 
diff --git a/webapp/golang/go.sum b/webapp/golang/go.sum
index d2fffded..52e375b4 100644
--- a/webapp/golang/go.sum
+++ b/webapp/golang/go.sum
@@ -12,8 +12,8 @@ github.com/google/gofuzz v1.2.0 h1:xRy4A+RhZaiKjJ1bPfwQ8sedCA+YS2YcCHW6ec7JMi0=
 github.com/google/gofuzz v1.2.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/gorilla/securecookie v1.1.2 h1:YCIWL56dvtr73r6715mJs5ZvhtnY73hBvEF8kXD8ePA=
 github.com/gorilla/securecookie v1.1.2/go.mod h1:NfCASbcHqRSY+3a8tlWJwsQap2VX5pwzwo4h3eOamfo=
-github.com/gorilla/sessions v1.3.0 h1:XYlkq7KcpOB2ZhHBPv5WpjMIxrQosiZanfoy1HLZFzg=
-github.com/gorilla/sessions v1.3.0/go.mod h1:ePLdVu+jbEgHH+KWw8I1z2wqd0BAdAQh/8LRvBeoNcQ=
+github.com/gorilla/sessions v1.4.0 h1:kpIYOp/oi6MG/p5PgxApU8srsSw9tuFbt46Lt7auzqQ=
+github.com/gorilla/sessions v1.4.0/go.mod h1:FLWm50oby91+hl7p/wRxDth9bWSuk0qVL2emc7lT5ik=
 github.com/jmoiron/sqlx v1.4.0 h1:1PLqN7S1UYp5t4SrVVnt4nUVNemrDAtxlulVe+Qgm3o=
 github.com/jmoiron/sqlx v1.4.0/go.mod h1:ZrZ7UsYB/weZdl2Bxg6jCRO9c3YHl8r3ahlKmRT4JLY=
 github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=