diff --git a/Dockerfile b/Dockerfile
index 71c76b5..cd527f3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.3
+FROM ruby:2.7.5
 
 RUN supercronicUrl=https://github.com/aptible/supercronic/releases/download/v0.1.3/supercronic-linux-amd64 && \
     supercronicBin=/usr/local/bin/supercronic && \