teknogeek0 · Sep 28, 2026 · Sep 28, 2026
diff --git a/AGENTS.md b/AGENTS.md
@@ -13,8 +13,8 @@ Key capabilities:
 **Container-only builds are required.** Do not run `make` or `make bin` on the host — use containers to avoid dependency conflicts.
 
 ```bash
-PGVERSION=16 make build          # Build in container (Docker)
-DOCKER=podman PGVERSION=16 make build  # If using Podman instead of Docker
+PGVERSION=18 make build          # Build in container (Docker)
+DOCKER=podman PGVERSION=18 make build  # If using Podman instead of Docker
 ```
 
 ### Build dependencies (installed inside the container)
@@ -29,9 +29,9 @@ DOCKER=podman PGVERSION=16 make build  # If using Podman instead of Docker
 Always run tests before committing. Tests use Docker Compose to spin up PostgreSQL source/target instances.
 
 ```bash
-PGVERSION=16 make tests          # Run all 17 test suites
-PGVERSION=16 make tests/pagila   # Run a specific suite
-PGVERSION=16 make tests/unit     # Unit tests
+PGVERSION=18 make tests          # Run all test suites
+PGVERSION=18 make tests/pagila   # Run a specific suite
+PGVERSION=18 make tests/unit     # Unit tests
 ```
 
 Test suites by category:
@@ -64,7 +64,7 @@ Documentation lives in `docs/` and is built with Sphinx (reStructuredText).
 When adding or modifying CLI commands:
 
 1. Update help text in the C source files
-2. Build in container: `PGVERSION=16 make build`
+2. Build in container: `PGVERSION=18 make build`
 3. Run `make update-docs` to regenerate `docs/include/*.rst`
 4. Commit both the code changes and the generated docs
 

diff --git a/Dockerfile b/Dockerfile
@@ -6,7 +6,7 @@ FROM debian:12-slim AS build
 ARG TARGETPLATFORM
 ARG TARGETOS
 ARG TARGETARCH
-ARG PGVERSION=16
+ARG PGVERSION=18
 
 # Configure apt to retry on transient failures
 RUN echo 'Acquire::Retries "3";' > /etc/apt/apt.conf.d/80-retries
@@ -95,7 +95,7 @@ FROM debian:12-slim AS run
 ARG TARGETPLATFORM
 ARG TARGETOS
 ARG TARGETARCH
-ARG PGVERSION=16
+ARG PGVERSION=18
 
 # used to configure Github Packages
 LABEL org.opencontainers.image.source=https://github.com/dimitri/pgcopydb

diff --git a/Makefile b/Makefile
@@ -3,7 +3,7 @@
 
 TOP := $(dir $(abspath $(lastword $(MAKEFILE_LIST))))
 PGCOPYDB ?= $(TOP)src/bin/pgcopydb/pgcopydb
-PGVERSION ?= 16
+PGVERSION ?= 18
 DOCKER ?= docker
 
 all: bin ;

diff --git a/tests/Dockerfile.pagila b/tests/Dockerfile.pagila
@@ -1,4 +1,4 @@
-ARG PGVERSION=16
+ARG PGVERSION=18
 ARG PGCOPYDB_IMAGE=pgcopydb:latest
 
 # Create a named stage from the pgcopydb image for COPY --from

diff --git a/tests/Makefile b/tests/Makefile
@@ -1,7 +1,7 @@
 # Copyright (c) 2021 The PostgreSQL Global Development Group.
 # Licensed under the PostgreSQL License.
 
-PGVERSION ?= 17
+PGVERSION ?= 18
 export PGVERSION
 
 # Auto-detect docker or podman

diff --git a/tests/blob-snapshot-release/compose.yaml b/tests/blob-snapshot-release/compose.yaml
@@ -1,6 +1,6 @@
 services:
   source:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:
@@ -11,7 +11,7 @@ services:
       -c wal_level=logical
 
   target:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:

diff --git a/tests/blobs/compose.yaml b/tests/blobs/compose.yaml
@@ -1,14 +1,14 @@
 services:
   source:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:
       POSTGRES_USER: postgres
       POSTGRES_PASSWORD: h4ckm3
       POSTGRES_HOST_AUTH_METHOD: trust
   target:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:

diff --git a/tests/cdc-endpos-between-transaction/Dockerfile.pg b/tests/cdc-endpos-between-transaction/Dockerfile.pg
@@ -1,7 +1,7 @@
-ARG PGVERSION=16
+ARG PGVERSION=18
 FROM postgres:${PGVERSION}
 
-ARG PGVERSION=16
+ARG PGVERSION=18
 USER root
 RUN apt-get update \
     && apt-get install -y --no-install-recommends postgresql-${PGVERSION}-wal2json \

diff --git a/tests/cdc-endpos-between-transaction/compose.yaml b/tests/cdc-endpos-between-transaction/compose.yaml
@@ -3,6 +3,8 @@ services:
     build:
       context: .
       dockerfile: Dockerfile.pg
+      args:
+        PGVERSION: ${PGVERSION:-18}
     expose:
       - 5432
     environment:
@@ -16,7 +18,7 @@ services:
       -c ssl_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
       -c ssl_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
   target:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:

diff --git a/tests/cdc-filtering-pgoutput/compose.yaml b/tests/cdc-filtering-pgoutput/compose.yaml
@@ -1,6 +1,6 @@
 services:
   source:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:
@@ -13,7 +13,7 @@ services:
       -c ssl_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
       -c ssl_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
   target:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:

diff --git a/tests/cdc-filtering/Dockerfile.pg b/tests/cdc-filtering/Dockerfile.pg
@@ -1,7 +1,7 @@
-ARG PGVERSION=16
+ARG PGVERSION=18
 FROM postgres:${PGVERSION}
 
-ARG PGVERSION=16
+ARG PGVERSION=18
 USER root
 RUN apt-get update \
     && apt-get install -y --no-install-recommends postgresql-${PGVERSION}-wal2json \

diff --git a/tests/cdc-filtering/compose.yaml b/tests/cdc-filtering/compose.yaml
@@ -3,6 +3,8 @@ services:
     build:
       context: .
       dockerfile: Dockerfile.pg
+      args:
+        PGVERSION: ${PGVERSION:-18}
     expose:
       - 5432
     environment:
@@ -16,7 +18,7 @@ services:
       -c ssl_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
       -c ssl_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
   target:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:

diff --git a/tests/cdc-low-level/compose.yaml b/tests/cdc-low-level/compose.yaml
@@ -1,6 +1,6 @@
 services:
   source:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:
@@ -13,7 +13,7 @@ services:
       -c ssl_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
       -c ssl_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
   target:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:

diff --git a/tests/cdc-message-handling/Dockerfile.pg b/tests/cdc-message-handling/Dockerfile.pg
@@ -1,7 +1,7 @@
-ARG PGVERSION=16
+ARG PGVERSION=18
 FROM postgres:${PGVERSION}
 
-ARG PGVERSION=16
+ARG PGVERSION=18
 USER root
 RUN apt-get update \
     && apt-get install -y --no-install-recommends postgresql-${PGVERSION}-wal2json \

diff --git a/tests/cdc-message-handling/compose.yaml b/tests/cdc-message-handling/compose.yaml
@@ -3,6 +3,8 @@ services:
     build:
       context: .
       dockerfile: Dockerfile.pg
+      args:
+        PGVERSION: ${PGVERSION:-18}
     expose:
       - 5432
     environment:
@@ -16,7 +18,7 @@ services:
       -c ssl_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
       -c ssl_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
   target:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:

diff --git a/tests/cdc-pgoutput/compose.yaml b/tests/cdc-pgoutput/compose.yaml
@@ -1,6 +1,6 @@
 services:
   source:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:
@@ -13,7 +13,7 @@ services:
       -c ssl_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
       -c ssl_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
   target:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:

diff --git a/tests/cdc-prune/Dockerfile.pg b/tests/cdc-prune/Dockerfile.pg
@@ -1,7 +1,7 @@
-ARG PGVERSION=16
+ARG PGVERSION=18
 FROM postgres:${PGVERSION}
 
-ARG PGVERSION=16
+ARG PGVERSION=18
 USER root
 RUN apt-get update \
     && apt-get install -y --no-install-recommends postgresql-${PGVERSION}-wal2json \

diff --git a/tests/cdc-prune/compose.yaml b/tests/cdc-prune/compose.yaml
@@ -3,6 +3,8 @@ services:
     build:
       context: .
       dockerfile: Dockerfile.pg
+      args:
+        PGVERSION: ${PGVERSION:-18}
     expose:
       - 5432
     environment:
@@ -13,7 +15,7 @@ services:
       -c wal_level=logical
       -c output_plugin_libraries=pgoutput,test_decoding,wal2json
   target:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:

diff --git a/tests/cdc-test-decoding/compose.yaml b/tests/cdc-test-decoding/compose.yaml
@@ -1,6 +1,6 @@
 services:
   source:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:
@@ -13,7 +13,7 @@ services:
       -c ssl_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
       -c ssl_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
   target:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:

diff --git a/tests/cdc-wal2json/Dockerfile.pg b/tests/cdc-wal2json/Dockerfile.pg
@@ -1,7 +1,7 @@
-ARG PGVERSION=16
+ARG PGVERSION=18
 FROM postgres:${PGVERSION}
 
-ARG PGVERSION=16
+ARG PGVERSION=18
 USER root
 RUN apt-get update \
     && apt-get install -y --no-install-recommends postgresql-${PGVERSION}-wal2json \

diff --git a/tests/cdc-wal2json/compose.yaml b/tests/cdc-wal2json/compose.yaml
@@ -3,6 +3,8 @@ services:
     build:
       context: .
       dockerfile: Dockerfile.pg
+      args:
+        PGVERSION: ${PGVERSION:-18}
     expose:
       - 5432
     environment:
@@ -16,7 +18,7 @@ services:
       -c ssl_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
       -c ssl_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
   target:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:

diff --git a/tests/copy-source-reconnect/compose.yaml b/tests/copy-source-reconnect/compose.yaml
@@ -1,6 +1,6 @@
 services:
   source:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:
@@ -12,7 +12,7 @@ services:
       -c ssl_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
       -c ssl_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
   target:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:

diff --git a/tests/defer-validate-fks/compose.yaml b/tests/defer-validate-fks/compose.yaml
@@ -1,6 +1,6 @@
 services:
   source:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:
@@ -12,7 +12,7 @@ services:
       -c ssl_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
       -c ssl_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
   target:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:

diff --git a/tests/endpos-in-multi-wal-txn/Dockerfile.pg b/tests/endpos-in-multi-wal-txn/Dockerfile.pg
@@ -1,7 +1,7 @@
-ARG PGVERSION=16
+ARG PGVERSION=18
 FROM postgres:${PGVERSION}
 
-ARG PGVERSION=16
+ARG PGVERSION=18
 USER root
 RUN apt-get update \
     && apt-get install -y --no-install-recommends postgresql-${PGVERSION}-wal2json \

diff --git a/tests/endpos-in-multi-wal-txn/compose.yaml b/tests/endpos-in-multi-wal-txn/compose.yaml
@@ -3,6 +3,8 @@ services:
     build:
       context: .
       dockerfile: Dockerfile.pg
+      args:
+        PGVERSION: ${PGVERSION:-18}
     expose:
       - 5432
     environment:
@@ -16,7 +18,7 @@ services:
       -c ssl_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
       -c ssl_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
   target:
-    image: postgres:${PGVERSION:-16}
+    image: postgres:${PGVERSION:-18}
     expose:
       - 5432
     environment:

diff --git a/tests/exclude-extension/Dockerfile b/tests/exclude-extension/Dockerfile
@@ -1,4 +1,4 @@
-ARG PGCOPYDB_IMAGE=pgcopydb:pg16
+ARG PGCOPYDB_IMAGE=pgcopydb:pg18
 FROM ${PGCOPYDB_IMAGE}
 
 USER root

diff --git a/tests/exclude-extension/Dockerfile.pg b/tests/exclude-extension/Dockerfile.pg
@@ -1,7 +1,7 @@
-ARG PGVERSION=16
+ARG PGVERSION=18
 FROM postgres:${PGVERSION}
 
-ARG PGVERSION=16
+ARG PGVERSION=18
 USER root
 
 RUN apt-get update && \