diff --git a/15/alpine/Dockerfile b/15/alpine/Dockerfile
index 959048fcc4..eaa64bc7ae 100644
--- a/15/alpine/Dockerfile
+++ b/15/alpine/Dockerfile
@@ -23,8 +23,8 @@ ENV LANG en_US.utf8
 RUN mkdir /docker-entrypoint-initdb.d
 
 ENV PG_MAJOR 15
-ENV PG_VERSION 15.2
-ENV PG_SHA256 99a2171fc3d6b5b5f56b757a7a3cb85d509a38e4273805def23941ed2b8468c7
+ENV PG_VERSION 15.3
+ENV PG_SHA256 ffc7d4891f00ffbf5c3f4eab7fbbced8460b8c0ee63c5a5167133b9e6599d932
 
 RUN set -eux; \
 	\
diff --git a/15/bullseye/Dockerfile b/15/bullseye/Dockerfile
index 125077db9b..3a1ef4eefa 100644
--- a/15/bullseye/Dockerfile
+++ b/15/bullseye/Dockerfile
@@ -84,7 +84,7 @@ RUN set -ex; \
 ENV PG_MAJOR 15
 ENV PATH $PATH:/usr/lib/postgresql/$PG_MAJOR/bin
 
-ENV PG_VERSION 15.2-1.pgdg110+1
+ENV PG_VERSION 15.3-1.pgdg110+1
 
 RUN set -ex; \
 	\
@@ -94,7 +94,7 @@ RUN set -ex; \
 	dpkgArch="$(dpkg --print-architecture)"; \
 	aptRepo="[ signed-by=/usr/local/share/keyrings/postgres.gpg.asc ] http://apt.postgresql.org/pub/repos/apt/ bullseye-pgdg main $PG_MAJOR"; \
 	case "$dpkgArch" in \
-		amd64 | arm64 | ppc64el) \
+		amd64 | arm64 | ppc64el | s390x) \
 # arches officialy built by upstream
 			echo "deb $aptRepo" > /etc/apt/sources.list.d/pgdg.list; \
 			apt-get update; \
diff --git a/versions.json b/versions.json
index a9d838c63d..0125a3470e 100644
--- a/versions.json
+++ b/versions.json
@@ -81,16 +81,17 @@
       "arches": [
         "amd64",
         "arm64",
-        "ppc64el"
+        "ppc64el",
+        "s390x"
       ],
-      "version": "15.2-1.pgdg110+1"
+      "version": "15.3-1.pgdg110+1"
     },
     "debian": "bullseye",
     "debianSuites": [
       "bullseye"
     ],
     "major": 15,
-    "sha256": "99a2171fc3d6b5b5f56b757a7a3cb85d509a38e4273805def23941ed2b8468c7",
-    "version": "15.2"
+    "sha256": "ffc7d4891f00ffbf5c3f4eab7fbbced8460b8c0ee63c5a5167133b9e6599d932",
+    "version": "15.3"
   }
 }