diff --git a/Dockerfile b/Dockerfile
index d7ac17a..91d59d8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,15 +4,15 @@ RUN apk add --no-cache ca-certificates
 
 RUN set -eux; \
 # https://github.com/distribution/distribution/releases
-	version='2.8.3'; \
+	version='3.0.0-alpha.1'; \
 	apkArch="$(apk --print-arch)"; \
 	case "$apkArch" in \
-		x86_64)  arch='amd64';   sha256='b1f750ecbe09f38e2143e22c61a25e3da2afe1510d9522859230b480e642ceff' ;; \
-		aarch64) arch='arm64';   sha256='7d2252eeeac97dd60fb9b36bebd15b95d7f947c4c82b8e0824cb55233ece9cd0' ;; \
-		armhf)   arch='armv6';   sha256='b00606466f976b6757268f1e7691918cbeca4af6fd4093a114b9186744ee8ef0' ;; \
-		armv7)   arch='armv7';   sha256='d3d7d958a7cc04159d43871261b1ed470ba72531d345fada311068962b967517' ;; \
-		ppc64le) arch='ppc64le'; sha256='9003659e5571bee89ee6d686057d02e9c0896d327276f268189922036e1ca84b' ;; \
-		s390x)   arch='s390x';   sha256='2c1347c73f881c320ff707055aecf649a888df39252e8bdc4fdfac7f59a383f1' ;; \
+		x86_64)  arch='amd64';   sha256='968a6dcc648aa842963ae00a28128200b6134732ff73db6fc1e52c6f9099d1f9' ;; \
+		aarch64) arch='arm64';   sha256='4f0d3ab06b8f77abf5ae39f08a214c2451b9eec4b1b9bb2eb9b9b9da3a3ad4cf' ;; \
+		armhf)   arch='armv6';   sha256='5ac4ac9cd5c7c658cd719efc44a67a0ef4b03e0618aa359ae726938eade66300' ;; \
+		armv7)   arch='armv7';   sha256='3c2eb167a162a17453dee0e43fb97b5abb771decf60b492e2867a2354fd0618d' ;; \
+		ppc64le) arch='ppc64le'; sha256='1e39ce43428437faf31f5df636d94c4dc21958076ebf96c1bd3baf67c3f7199a' ;; \
+		s390x)   arch='s390x';   sha256='94c53ba2254013b3e38d0c0a8d8005e41681f1f394c23a61db9953d61c134c07' ;; \
 		*) echo >&2 "error: unsupported architecture: $apkArch"; exit 1 ;; \
 	esac; \
 	wget -O registry.tar.gz "https://github.com/distribution/distribution/releases/download/v${version}/registry_${version}_linux_${arch}.tar.gz"; \