diff --git a/Dockerfile b/Dockerfile
index 80b7798..baf622b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.20.5 as builder
+FROM golang:1.21.3 as builder
 ENV GOPATH="/go"
 WORKDIR /go/src/github.com/kovetskiy/mark
 COPY / .