diff --git a/12/Dockerfile b/12/Dockerfile
index 336bfdf0d7..e3f4a7bec7 100644
--- a/12/Dockerfile
+++ b/12/Dockerfile
@@ -83,7 +83,7 @@ RUN set -ex; \
 	apt-key list
 
 ENV PG_MAJOR 12
-ENV PG_VERSION 12.2-2.pgdg100+1
+ENV PG_VERSION 12.3-1.pgdg100+1
 
 RUN set -ex; \
 	\
@@ -92,7 +92,7 @@ RUN set -ex; \
 	\
 	dpkgArch="$(dpkg --print-architecture)"; \
 	case "$dpkgArch" in \
-		amd64 | i386 | ppc64el) \
+		amd64 | arm64 | i386 | ppc64el) \
 # arches officialy built by upstream
 			echo "deb http://apt.postgresql.org/pub/repos/apt/ buster-pgdg main $PG_MAJOR" > /etc/apt/sources.list.d/pgdg.list; \
 			apt-get update; \