diff --git a/.drone.yml b/.drone.yml
index aedca91..b1c29c3 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -9,7 +9,7 @@ pool:
 
 steps:
   - name: lint
-    image: golang:1.20
+    image: golang:1.21
     pull: always
     commands:
       - go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest
@@ -19,7 +19,7 @@ steps:
       - name: gopath
         path: "/go"
   - name: test
-    image: golang:1.20
+    image: golang:1.21
     commands:
       - go test -cover ./...
     volumes:
@@ -46,7 +46,7 @@ pool:
 
 steps:
   - name: environment
-    image: golang:1.20
+    image: golang:1.21
     pull: always
     environment:
       CGO_ENABLED: "0"
@@ -54,7 +54,7 @@ steps:
       - go version
       - go env
   - name: build
-    image: golang:1.20
+    image: golang:1.21
     environment:
       CGO_ENABLED: "0"
     commands:
@@ -90,7 +90,7 @@ pool:
 
 steps:
   - name: environment
-    image: golang:1.20
+    image: golang:1.21
     pull: always
     environment:
       CGO_ENABLED: "0"
@@ -98,7 +98,7 @@ steps:
       - go version
       - go env
   - name: build
-    image: golang:1.20
+    image: golang:1.21
     environment:
       CGO_ENABLED: "0"
     commands:
@@ -134,7 +134,7 @@ pool:
 
 steps:
   - name: environment
-    image: golang:1.20
+    image: golang:1.21
     pull: always
     environment:
       CGO_ENABLED: "0"
@@ -142,7 +142,7 @@ steps:
       - go version
       - go env
   - name: build
-    image: golang:1.20
+    image: golang:1.21
     environment:
       CGO_ENABLED: "0"
     commands:
@@ -184,7 +184,7 @@ pool:
 
 steps:
   - name: environment
-    image: golang:1.20
+    image: golang:1.21
     pull: always
     environment:
       CGO_ENABLED: "0"
@@ -192,7 +192,7 @@ steps:
       - go version
       - go env
   - name: build
-    image: golang:1.20
+    image: golang:1.21
     environment:
       CGO_ENABLED: "0"
     commands: