diff --git a/Dockerfile b/Dockerfile
index 1692879..9bac39d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,7 +7,7 @@ RUN apk add --no-cache git && \
     go mod download && \
     CGO_ENABLED=0 go build -ldflags="-s -w" -buildvcs=false -o "SignTools"
 
-FROM alpine:3.17.2
+FROM alpine:3.18.2
 
 WORKDIR /