diff --git a/.ci/jobs/elastic+ansible-elasticsearch+master.yml b/.ci/jobs/elastic+ansible-elasticsearch+master.yml
index 658b352..6fc50a1 100644
--- a/.ci/jobs/elastic+ansible-elasticsearch+master.yml
+++ b/.ci/jobs/elastic+ansible-elasticsearch+master.yml
@@ -10,7 +10,7 @@
         #!/usr/local/bin/runbld
         set -euo pipefail
 
-        export RBENV_VERSION='2.3.0'
+        export RBENV_VERSION='2.5.7'
         export PATH="$HOME/.rbenv/bin:$PATH"
         eval "$(rbenv init -)"
         rbenv local $RBENV_VERSION
diff --git a/.ci/jobs/elastic+ansible-elasticsearch+pull-request.yml b/.ci/jobs/elastic+ansible-elasticsearch+pull-request.yml
index 0cb82a6..166c43a 100644
--- a/.ci/jobs/elastic+ansible-elasticsearch+pull-request.yml
+++ b/.ci/jobs/elastic+ansible-elasticsearch+pull-request.yml
@@ -23,7 +23,7 @@
         #!/usr/local/bin/runbld
         set -euo pipefail
 
-        export RBENV_VERSION='2.3.0'
+        export RBENV_VERSION='2.5.7'
         export PATH="$HOME/.rbenv/bin:$PATH"
         eval "$(rbenv init -)"
         rbenv local $RBENV_VERSION