diff --git a/.ruby-version b/.ruby-version
index 75a22a2..0aec50e 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.0.3
+3.1.4
diff --git a/Dockerfile b/Dockerfile
index b7d3ae8..4edee3f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.0.3-alpine3.15
+FROM ruby:3.1.4-alpine3.17
 
 RUN apk update && apk --update add \
   ruby-io-console \