diff --git a/Changelog.md b/Changelog.md
index 3b93d113..d59a842f 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -8,6 +8,7 @@ https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG.md) for the list o
 - Update gitaly to 1.47.0
 - Update gitlab-shell to 9.3.0
 - Update gitlab-pages to 1.6.1
+- ruby: update to 2.6
 
 **11.11.3**
 - gitlab: upgrade CE to v11.11.3
diff --git a/Dockerfile b/Dockerfile
index 22cac6d3..c22b5427 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,7 @@ ARG VCS_REF
 ARG VERSION=12.0.0
 
 ENV GITLAB_VERSION=${VERSION} \
-    RUBY_VERSION=2.5 \
+    RUBY_VERSION=2.6 \
     GOLANG_VERSION=1.12.6 \
     GITLAB_SHELL_VERSION=9.3.0 \
     GITLAB_WORKHORSE_VERSION=8.7.0 \