diff --git a/CONTAINER.md b/CONTAINER.md
index 5c5ce62c5..cb32b4090 100644
--- a/CONTAINER.md
+++ b/CONTAINER.md
@@ -267,7 +267,7 @@ Build ejabberd Community Server base image for a given ejabberd version,
 both for amd64 and arm64 architectures:
 
 ```bash
-VERSION = 21.12
+VERSION = 22.05
 docker buildx build \
     --platform=linux/amd64,linux/arm64
     --build-arg VERSION=$(VERSION) \
diff --git a/configure.ac b/configure.ac
index bbd9e9d5a..68fb1f4d2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ(2.59)
-AC_INIT(ejabberd, m4_esyscmd([echo `git describe --tags 2>/dev/null || echo 21.12` | sed 's/-g.*//;s/-/./' | tr -d '\012']), [ejabberd@process-one.net], [ejabberd])
+AC_INIT(ejabberd, m4_esyscmd([echo `git describe --tags 2>/dev/null || echo 22.05` | sed 's/-g.*//;s/-/./' | tr -d '\012']), [ejabberd@process-one.net], [ejabberd])
 REQUIRE_ERLANG_MIN="8.3 (Erlang/OTP 19.3)"
 REQUIRE_ERLANG_MAX="100.0.0 (No Max)"