diff --git a/.ruby-version b/.ruby-version
index 619b537..9c25013 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.3.3
+3.3.6
diff --git a/Gemfile.lock b/Gemfile.lock
index 0edf838..0aaebbb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -45,4 +45,4 @@ DEPENDENCIES
   rubocop-rake (~> 0.6)
 
 BUNDLED WITH
-   2.5.15
+   2.6.0
diff --git a/docs/domains.md b/docs/domains.md
index 229e361..e0a41fd 100644
--- a/docs/domains.md
+++ b/docs/domains.md
@@ -43,6 +43,7 @@
 [www.artichokeruby.run]: https://www.artichokeruby.run/
 
 [^2]: Property sets [HTTP Strict Transport Security][hsts-explainer] headers.
+
 [^3]:
     The playground snapshot at <https://rubyconf2019.artichoke.run> is used by
     RubyConf 2019 presentation at <https://artichoke.github.io/rubyconf/2019/>,
diff --git a/package-lock.json b/package-lock.json
index 683c872..11016f1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,13 +9,13 @@
       "version": "0.1.0",
       "license": "MIT",
       "devDependencies": {
-        "prettier": "^3.2.5"
+        "prettier": "^3.4.1"
       }
     },
     "node_modules/prettier": {
-      "version": "3.2.5",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.2.5.tgz",
-      "integrity": "sha512-3/GWa9aOC0YeD7LUfvOG2NiDyhOWRvt1k+rcKhOuYnMY24iiCphgneUfJDyFXd6rZCAnuLBv6UeAULtrhT/F4A==",
+      "version": "3.4.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.4.1.tgz",
+      "integrity": "sha512-G+YdqtITVZmOJje6QkXQWzl3fSfMxFwm1tjTyo9exhkmWSqC4Yhd1+lug++IlR2mvRVAxEDDWYkQdeSztajqgg==",
       "dev": true,
       "bin": {
         "prettier": "bin/prettier.cjs"
diff --git a/package.json b/package.json
index d015766..2f1bb2a 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
   ],
   "repository": "github:artichoke/project-infrastructure",
   "devDependencies": {
-    "prettier": "^3.2.5"
+    "prettier": "^3.4.1"
   },
   "eslintConfig": {
     "env": {