diff --git a/CHANGES b/CHANGES
index 084b69feb..fa92c1680 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2046,9 +2046,12 @@
 * Add note that password reset and invite links expire in 24 hours
 
 [5.5.0]
+* **IMPORTANT:** DO NOT UPGRADE WITHOUT A BACKUP - PostgreSQL UPGRADE REQUIRES A VALID BACKUP.
+* postgresql: update to PostgreSQL 11
 * postgresql: add citext extension to whitelist for loomio
 * postgresql: add btree_gist,postgres_fdw extensions for gitlab
 * SFTP/Filebrowser: fix access of external data directories
 * Fix contrast issues in dark mode
 * Add option to delete mailbox data when mailbox is delete
 * Allow days/hours of backups and updates to be configurable
+
diff --git a/src/infra_version.js b/src/infra_version.js
index 9bda57c74..02983917c 100644
--- a/src/infra_version.js
+++ b/src/infra_version.js
@@ -17,7 +17,7 @@ exports = module.exports = {
     'images': {
         'turn': { repo: 'cloudron/turn', tag: 'cloudron/turn:1.1.0@sha256:e1dd22aa6eef5beb7339834b200a8bb787ffc2264ce11139857a054108fefb4f' },
         'mysql': { repo: 'cloudron/mysql', tag: 'cloudron/mysql:2.3.1@sha256:c1145d43c8a912fe6f5a5629a4052454a4aa6f23391c1efbffeec9d12d72a256' },
-        'postgresql': { repo: 'cloudron/postgresql', tag: 'cloudron/postgresql:2.4.0@sha256:92d747328e3923c543ec9a5b6fe1645a0fcff91317a58ce8fe00f79064eaa5ff' },
+        'postgresql': { repo: 'cloudron/postgresql', tag: 'cloudron/postgresql:3.0.0@sha256:a5fcc32b284662ae207ef29ee92c020164430f8ac8c7c2977511002b35fe144f' },
         'mongodb': { repo: 'cloudron/mongodb', tag: 'cloudron/mongodb:2.2.0@sha256:205486ff0f6bf6854610572df401cf3651bc62baf28fd26e9c5632497f10c2cb' },
         'redis': { repo: 'cloudron/redis', tag: 'cloudron/redis:2.3.0@sha256:0e31ec817e235b1814c04af97b1e7cf0053384aca2569570ce92bef0d95e94d2' },
         'mail': { repo: 'cloudron/mail', tag: 'cloudron/mail:2.9.4@sha256:0e169b97a0584a76197d2bbc039d8698bf93f815588b3b43c251bd83dd545465' },