diff --git a/.drone.yml b/.drone.yml
index 943ac93..81c102d 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -32,7 +32,7 @@ steps:
 
   - name: golang
     pull: always
-    image: docker.io/library/golang:1.20.5-alpine3.18
+    image: docker.io/library/golang:1.21.0-alpine3.18
     commands:
       - uname -r
       - go version
@@ -73,7 +73,7 @@ steps:
       - hugo --gc=true --minify
 
   - name: go fmt
-    image: docker.io/library/golang:1.20.5-alpine3.18
+    image: docker.io/library/golang:1.21.0-alpine3.18
     volumes:
       - name: gopath
         path: /go
@@ -83,7 +83,7 @@ steps:
       - go fmt
 
   - name: go vet
-    image: docker.io/library/golang:1.20.5-alpine3.18
+    image: docker.io/library/golang:1.21.--alpine3.18
     volumes:
       - name: gopath
         path: /go
@@ -94,7 +94,7 @@ steps:
 
   - name: go build
     pull: if-not-exists
-    image: docker.io/library/golang:1.20.5-alpine3.18
+    image: docker.io/library/golang:1.21.0-alpine3.18
     volumes:
       - name: gopath
         path: /go
@@ -295,7 +295,7 @@ steps:
       - docker-compose -f docker-compose.yml config -q
 
   - name: go fmt
-    image: docker.io/library/golang:1.20.5-alpine3.18
+    image: docker.io/library/golang:1.21.0-alpine3.18
     volumes:
       - name: gopath
         path: /go
@@ -305,7 +305,7 @@ steps:
       - go fmt
 
   - name: go vet
-    image: docker.io/library/golang:1.20.5-alpine3.18
+    image: docker.io/library/golang:1.21.0-alpine3.18
     volumes:
       - name: gopath
         path: /go
@@ -317,7 +317,7 @@ steps:
       - go vet
 
   - name: go build
-    image: docker.io/library/golang:1.20.5-alpine3.18
+    image: docker.io/library/golang:1.21.0-alpine3.18
     volumes:
       - name: gopath
         path: /go
@@ -466,6 +466,6 @@ steps:
 
 ---
 kind: signature
-hmac: bba585fcc25da54d977b4a233c988f5888f59ef91f51d893aeaefb7cb62c1379
+hmac: 4e178bb873563499a7b3b00fdb372acc239dedfb8b151858598a29778349f44c
 
 ...
diff --git a/Dockerfile b/Dockerfile
index 70a0619..250b695 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,7 +20,7 @@ WORKDIR /homepage
 RUN hugo version && \
 	hugo --minify --gc=true --cleanDestinationDir
 
-FROM docker.io/library/golang:1.20.5-alpine3.18 AS gobuild
+FROM docker.io/library/golang:1.21.0-alpine3.18 AS gobuild
 COPY --from=hugobuild /homepage/ /homepage/
 
 WORKDIR /homepage