diff --git a/.drone.yml b/.drone.yml
index 28413ef..3dedf68 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -67,7 +67,7 @@ steps:
 - name: unit-test
   commands:
   - go test -v ./...
-  image: docker.io/library/golang:1.20.6
+  image: docker.io/library/golang:1.21.0
 
 trigger:
   event:
@@ -92,7 +92,7 @@ steps:
 - name: unit-test
   commands:
   - go test -v ./...
-  image: docker.io/library/golang:1.20.6
+  image: docker.io/library/golang:1.21.0
 
 trigger:
   event:
@@ -120,7 +120,7 @@ steps:
 - name: unit-test
   commands:
   - go test -v ./...
-  image: docker.io/library/golang:1.20.6
+  image: docker.io/library/golang:1.21.0
 
 trigger:
   event:
diff --git a/Dockerfile b/Dockerfile
index 7bf957e..0037050 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/library/golang:1.20.7-alpine3.18 AS build
+FROM docker.io/library/golang:1.21.0-alpine3.18 AS build
 
 RUN apk add git make