diff --git a/renovate.Dockerfile b/renovate.Dockerfile
index da108dc..1c395d9 100644
--- a/renovate.Dockerfile
+++ b/renovate.Dockerfile
@@ -11,7 +11,7 @@ FROM scratch
 ENV ERLANG_VERSION=22.3.4.27
 
 # renovate: datasource=docker depName=erlang
-ENV ERLANG_VERSION=23.3.4.19
+ENV ERLANG_VERSION=23.3.4.20
 
 # renovate: datasource=docker depName=erlang
 ENV ERLANG_VERSION=24.3.4.13