diff --git a/Dockerfile b/Dockerfile
index 3f05366..aaebca6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.21
+FROM golang:1.22
 
 RUN apt-get update \
  && apt-get install -y libaio1 unzip
diff --git a/go.mod b/go.mod
index 8773d08..18c4341 100644
--- a/go.mod
+++ b/go.mod
@@ -1,8 +1,8 @@
 module github.com/sue445/plant_erd
 
-go 1.21
+go 1.22
 
-toolchain go1.21.0
+toolchain go1.22.0
 
 require (
 	github.com/deckarep/golang-set v1.8.0