diff --git a/Dockerfile b/Dockerfile
index dc54c51..1e17d15 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
-FROM alpine:3.15 AS builder
+FROM docker.io/alpine:3.15 AS builder
 
-ENV VERSION=v1.59.1
+ENV VERSION=v1.61.1
 
 RUN apk add --no-cache \
     alpine-sdk \
@@ -15,7 +15,7 @@ RUN apk add --no-cache \
 
 RUN pip3 install --target="/install" matrix-synapse==$VERSION
 
-FROM thallian/confd-env:latest
+FROM docker.io/thallian/confd-env:latest
 
 RUN addgroup -g 2222 matrix-synapse
 RUN adduser -h /var/lib/matrix-synapse -u 2222 -D -G matrix-synapse matrix-synapse