diff --git a/Dockerfile b/Dockerfile
index 0fc04c9..9e61fc1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.13-alpine@sha256:8cc699270cfeed0864420e5c650aa9c1b51ed5b23cf927ab4c5eea47f6c0c1a8 AS builder
+FROM golang:1.21-alpine@sha256:926f7f7e1ab8509b4e91d5ec6d5916ebb45155b0c8920291ba9f361d65385806 AS builder
 
 WORKDIR /opt