diff --git a/Dockerfile b/Dockerfile
index a3d93103..b6e8ac36 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ WORKDIR /server/
 ARG TARGETOS TARGETARCH
 RUN GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build --ldflags "-s -w" -o ./bin/postee main.go
 
-FROM alpine:3.18.2
+FROM alpine:3.18.3
 RUN apk update && apk add wget ca-certificates curl jq
 EXPOSE 8082
 EXPOSE 8445
diff --git a/Dockerfile.release b/Dockerfile.release
index 2dc774f9..e90d8d97 100644
--- a/Dockerfile.release
+++ b/Dockerfile.release
@@ -1,4 +1,4 @@
-FROM alpine:3.18.2
+FROM alpine:3.18.3
 RUN apk add --no-cache \
   ca-certificates \
   curl \
diff --git a/Dockerfile.ui b/Dockerfile.ui
index b4b9d21f..e1c0466e 100644
--- a/Dockerfile.ui
+++ b/Dockerfile.ui
@@ -14,7 +14,7 @@ RUN apk add git
 ARG TARGETOS TARGETARCH
 RUN GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build --ldflags "-s -w" -o posteeui
 
-FROM alpine:3.18.2
+FROM alpine:3.18.3
 EXPOSE 8001
 
 RUN mkdir /uiserver