diff --git a/Dockerfile b/Dockerfile
index af10c92..727a999 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/golang:1.18.0-alpine3.15 as builder
+FROM docker.io/golang:1.18.3-alpine3.16 as builder
 
 ENV VERSION=v0.5.0
 
@@ -18,7 +18,7 @@ RUN git checkout $VERSION
 
 RUN go build -o /build/bin/mautrix-whatsapp
 
-FROM docker.io/thallian/confd-env:latest
+FROM docker.io/thallian/confd-env:3.16
 
 RUN addgroup -g 2222 matrix-bridge
 RUN adduser -h /var/lib/matrix-bridge -u 2222 -D -G matrix-bridge matrix-bridge