diff --git a/Dockerfile b/Dockerfile
index f9ef4e7..fb74c18 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.1.2-slim
+FROM ruby:3.1.3-slim
 
 RUN apt-get update -qq && apt-get install -yq --no-install-recommends \
     build-essential \
diff --git a/production.Dockerfile b/production.Dockerfile
index 6028574..ff00957 100644
--- a/production.Dockerfile
+++ b/production.Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.1.2-slim
+FROM ruby:3.1.3-slim
 
 RUN apt-get update -qq && apt-get install -yq --no-install-recommends \
     build-essential \