diff --git a/.drone.yml b/.drone.yml
index fc6105e..a034081 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -5,7 +5,7 @@ name: default
 
 steps:
   - name: test
-    image: golang:1.20.4
+    image: golang:1.21.3
     commands:
       - pwd
       - go test -v
@@ -55,6 +55,6 @@ volumes:
 
 ---
 kind: signature
-hmac: a594c687217d9d5edae949bb0d64cd2db5a259199a38bc966c16494d5d4424fe
+hmac: ae129d718e76a9823a7cbf74cbb38eb6684bae1f38f9a7c94731fa62f42a2d0a
 
 ...
diff --git a/Dockerfile b/Dockerfile
index 4fa8f21..4947267 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.20.4-alpine3.18 as builder
+FROM golang:1.21.3-alpine3.18 as builder
 WORKDIR /go/src/gitea.develooper.com/ask/drone-test
 ADD . .
 RUN CGO_ENABLED=1 GOOS=linux go build -o demo
diff --git a/go.mod b/go.mod
index 157b319..1abce26 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
 module gitea.develooper.com/ask/drone-test
 
-go 1.16
+go 1.21