diff --git a/backend/gateway/Dockerfile b/backend/gateway/Dockerfile
index d22f668..41bab28 100644
--- a/backend/gateway/Dockerfile
+++ b/backend/gateway/Dockerfile
@@ -8,7 +8,7 @@ COPY main.go ./
 RUN go mod download
 RUN go build -o gateway main.go
 
-FROM alpine:latest
+FROM alpine:3.23
 
 WORKDIR /app
 
diff --git a/backend/services/user-svc/Dockerfile b/backend/services/user-svc/Dockerfile
index 74cb808..891bc1b 100644
--- a/backend/services/user-svc/Dockerfile
+++ b/backend/services/user-svc/Dockerfile
@@ -12,7 +12,7 @@ RUN go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
 RUN protoc --go_out=. --go-grpc_out=. user.proto
 RUN go build -o user-svc main.go
 
-FROM alpine:latest
+FROM alpine:3.23
 
 WORKDIR /app