diff --git a/containers/zammad/Dockerfile b/containers/zammad/Dockerfile
index d171e11..c24b219 100644
--- a/containers/zammad/Dockerfile
+++ b/containers/zammad/Dockerfile
@@ -11,7 +11,7 @@ ENV GIT_URL ${PROJECT_URL}.git
 ENV GIT_BRANCH stable
 ENV ZAMMAD_TMP_DIR /tmp/zammad-${GIT_BRANCH}
 ENV TAR_GZ_URL ${PROJECT_URL}/archive/${GIT_BRANCH}.tar.gz
-ENV GOSU_VERSION 1.10
+ENV GOSU_VERSION 1.11
 ENV ZAMMAD_READY_FILE ${ZAMMAD_DIR}/tmp/zammad.ready
 
 LABEL org.label-schema.build-date="$BUILD_DATE" \