diff --git a/Dockerfile b/Dockerfile
index 80d86cc..be83671 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.21.5-alpine3.18@sha256:d8b99943fb0587b79658af03d4d4e8b57769b21dcf08a8401352a9f2a7228754 as build
+FROM golang:1.21.6-alpine3.18@sha256:869193e7c30611d635c7bc3d1ed879039b7d24710a03474437d402f06825171e as build
 RUN apk add --no-cache ca-certificates git make
 WORKDIR /usr/src/app
 COPY ./go.mod ./go.sum ./