diff --git a/9000/jre/Dockerfile b/9000/jre/Dockerfile
index 0719998..b81fee8 100644
--- a/9000/jre/Dockerfile
+++ b/9000/jre/Dockerfile
@@ -2,7 +2,7 @@ FROM openjdk:8-jre
 
 RUN apt-get update && apt-get install -y libc6-dev --no-install-recommends && rm -rf /var/lib/apt/lists/*
 
-ENV JRUBY_VERSION 9.1.12.0
+ENV JRUBY_VERSION 9.1.11.0
 ENV JRUBY_SHA256 ddb23c95f4b3cc3fc1cc57b81cb4ceee776496ede402b9a6eb0622cf15e1a597
 RUN mkdir /opt/jruby \
   && curl -fSL https://s3.amazonaws.com/jruby.org/downloads/${JRUBY_VERSION}/jruby-bin-${JRUBY_VERSION}.tar.gz -o /tmp/jruby.tar.gz \