diff --git a/Dockerfile b/Dockerfile
index e8aafc8..a8b3581 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.21 AS builder
+FROM golang:1.22 AS builder
 WORKDIR /app
 COPY . /app
 RUN CGO_ENABLED=0 go build -v -o telegram-notify .
diff --git a/go.mod b/go.mod
index 1838dbf..11297cf 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/chapvic/telegram-notify
 
-go 1.21
+go 1.22
 
 require (
 	github.com/JohannesKaufmann/html-to-markdown v1.6.0