diff --git a/.rubocop.yml b/.rubocop.yml
index 56d8213b..f7f981fe 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,8 +1,8 @@
 ---
-require: rubocop-rake
+plugins: rubocop-rake
 AllCops:
   NewCops: enable
-  TargetRubyVersion: 3.2
+  TargetRubyVersion: 3.4
   DisplayCopNames: true
   Exclude:
     - "**/node_modules/**/*"
diff --git a/.ruby-version b/.ruby-version
index 9c25013d..2f4b6075 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.3.6
+3.4
diff --git a/Gemfile.lock b/Gemfile.lock
index 262327df..e492f75c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -50,4 +50,4 @@ DEPENDENCIES
   rubocop-rake (~> 0.7)
 
 BUNDLED WITH
-   2.6.2
+   2.6.9
diff --git a/package-lock.json b/package-lock.json
index df2bdcd0..a20d74d9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,7 +8,7 @@
       "name": "@artichokeruby/boba",
       "version": "0.0.0",
       "devDependencies": {
-        "prettier": "^3.5.3"
+        "prettier": "3.5.3"
       }
     },
     "node_modules/prettier": {
diff --git a/package.json b/package.json
index 523d9e20..2e4a8649 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   "homepage": "https://www.artichokeruby.org",
   "bugs": "https://github.com/artichoke/boba/issues",
   "devDependencies": {
-    "prettier": "^3.5.3"
+    "prettier": "3.5.3"
   },
   "scripts": {
     "fmt": "prettier --write \"**/*\""