diff --git a/.circleci/config.yml b/.circleci/config.yml
index 32779bf..af9c753 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -4,7 +4,7 @@ executors:
     parameters:
       version:
         description: "Ruby version number"
-        default: "3.3.0"
+        default: "3.3.1"
         type: string
     docker:
       - image: cimg/ruby:<< parameters.version >>
@@ -15,7 +15,7 @@ commands:
     parameters:
       version:
         description: "Ruby version number"
-        default: "3.3.0"
+        default: "3.3.1"
         type: string
     steps:
       - restore_cache:
@@ -44,7 +44,7 @@ jobs:
     parameters:
       version:
         description: "Ruby version number"
-        default: "3.3.0"
+        default: "3.3.1"
         type: string
     executor:
       name: ruby
@@ -65,14 +65,14 @@ workflows:
       - test:
           matrix:
             parameters:
-              version: ["3.1.4", "3.2.3", "3.3.0"]
+              version: ["3.1.5", "3.2.4", "3.3.1"]
   cron-workflow:
     jobs:
       - rubocop
       - test:
           matrix:
             parameters:
-              version: ["3.1.4", "3.2.3", "3.3.0"]
+              version: ["3.1.5", "3.2.4", "3.3.1"]
     triggers:
       - schedule:
           cron: "0 13 * * 6"
diff --git a/.ruby-version b/.ruby-version
index 15a2799..bea438e 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.3.0
+3.3.1
diff --git a/Gemfile.lock b/Gemfile.lock
index 267c2d5..652dd65 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -78,4 +78,4 @@ DEPENDENCIES
   wordexp!
 
 BUNDLED WITH
-   2.5.7
+   2.5.11