diff --git a/README.adoc b/README.adoc
index fc25d1f..1a8a12d 100644
--- a/README.adoc
+++ b/README.adoc
@@ -48,7 +48,7 @@ Gitea base image (rootless) with https://docs.gitea.com/administration/external-
 
 [source,shell]
 ----
-docker build --build-arg VERSION=1.21.4 -f ./gitea-external-renderers.Dockerfile -t gitea-external-renderers:1.21.4 .
+docker build --build-arg VERSION=1.21.6 -f ./gitea-external-renderers.Dockerfile -t gitea-external-renderers:1.21.6 .
 ----
 
 Existing pre-built images :
@@ -57,4 +57,5 @@ Existing pre-built images :
 * git.syyrell.com/syrell/gitea-external-renderers:1.21.2
 * git.syyrell.com/syrell/gitea-external-renderers:1.21.3
 * git.syyrell.com/syrell/gitea-external-renderers:1.21.4
-* git.syyrell.com/syrell/gitea-external-renderers:1.21.5
\ No newline at end of file
+* git.syyrell.com/syrell/gitea-external-renderers:1.21.5
+* git.syyrell.com/syrell/gitea-external-renderers:1.21.6
\ No newline at end of file