diff --git a/18/alpine3.21/Dockerfile b/18/alpine3.21/Dockerfile
index aa00a7d514..6060e7962c 100644
--- a/18/alpine3.21/Dockerfile
+++ b/18/alpine3.21/Dockerfile
@@ -52,8 +52,8 @@ ENV LANG en_US.utf8
 RUN mkdir /docker-entrypoint-initdb.d
 
 ENV PG_MAJOR 18
-ENV PG_VERSION 18beta3
-ENV PG_SHA256 21d86e55eea11300c3a2212647dc3d48bd844b83017cf6ce5684639ad8f95278
+ENV PG_VERSION 18rc1
+ENV PG_SHA256 b1a4cdc0ed6e97d117f044da67815829d560002c821290a9dee86e5e499b2f4c
 
 ENV DOCKER_PG_LLVM_DEPS \
 		llvm19-dev \
diff --git a/18/alpine3.22/Dockerfile b/18/alpine3.22/Dockerfile
index 0a8c65082e..d7e41ab0ff 100644
--- a/18/alpine3.22/Dockerfile
+++ b/18/alpine3.22/Dockerfile
@@ -52,8 +52,8 @@ ENV LANG en_US.utf8
 RUN mkdir /docker-entrypoint-initdb.d
 
 ENV PG_MAJOR 18
-ENV PG_VERSION 18beta3
-ENV PG_SHA256 21d86e55eea11300c3a2212647dc3d48bd844b83017cf6ce5684639ad8f95278
+ENV PG_VERSION 18rc1
+ENV PG_SHA256 b1a4cdc0ed6e97d117f044da67815829d560002c821290a9dee86e5e499b2f4c
 
 ENV DOCKER_PG_LLVM_DEPS \
 		llvm19-dev \
diff --git a/18/bookworm/Dockerfile b/18/bookworm/Dockerfile
index 93fedee69d..64ee3f869e 100644
--- a/18/bookworm/Dockerfile
+++ b/18/bookworm/Dockerfile
@@ -89,7 +89,7 @@ RUN set -ex; \
 ENV PG_MAJOR 18
 ENV PATH $PATH:/usr/lib/postgresql/$PG_MAJOR/bin
 
-ENV PG_VERSION 18~beta3-1.pgdg120+1
+ENV PG_VERSION 18~rc1-1.pgdg12+1
 
 RUN set -ex; \
 	\
diff --git a/18/trixie/Dockerfile b/18/trixie/Dockerfile
index 0be79da291..cb9bb2d295 100644
--- a/18/trixie/Dockerfile
+++ b/18/trixie/Dockerfile
@@ -89,7 +89,7 @@ RUN set -ex; \
 ENV PG_MAJOR 18
 ENV PATH $PATH:/usr/lib/postgresql/$PG_MAJOR/bin
 
-ENV PG_VERSION 18~beta3-1.pgdg130+1
+ENV PG_VERSION 18~rc1-1.pgdg13+1
 
 RUN set -ex; \
 	\
diff --git a/versions.json b/versions.json
index 04ec5498ba..455e3e438b 100644
--- a/versions.json
+++ b/versions.json
@@ -3,7 +3,7 @@
     "alpine": "3.22",
     "debian": "trixie",
     "trixie": {
-      "version": "18~beta3-1.pgdg130+1",
+      "version": "18~rc1-1.pgdg13+1",
       "arches": [
         "amd64",
         "arm64",
@@ -17,15 +17,15 @@
       "alpine3.21"
     ],
     "bookworm": {
-      "version": "18~beta3-1.pgdg120+1",
+      "version": "18~rc1-1.pgdg12+1",
       "arches": [
         "amd64",
         "arm64",
         "ppc64el"
       ]
     },
-    "version": "18beta3",
-    "sha256": "21d86e55eea11300c3a2212647dc3d48bd844b83017cf6ce5684639ad8f95278",
+    "version": "18rc1",
+    "sha256": "b1a4cdc0ed6e97d117f044da67815829d560002c821290a9dee86e5e499b2f4c",
     "major": 18
   },
   "17": {