diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index e4b4ef8..4f9e871 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -15,7 +15,7 @@ jobs:
     - name: Set up Ruby
       uses: ruby/setup-ruby@0dafeac902942906541bc140009cdbf32665b601 # ruby/setup-ruby@v1 see https://github.com/ruby/setup-ruby/tree/v1
       with:
-        ruby-version: 3.4
+        ruby-version: 4.0
     - name: Install dependencies
       run: bundle install
     - name: Run RuboCop against BASE..HEAD changes
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 675ac36..d224c61 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,6 +11,7 @@ jobs:
           - '3.2'
           - '3.3'
           - '3.4'
+          - '4.0'
 
     name: Ruby ${{ matrix.ruby-version }}
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 11ff6aa..1ddd7f8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 ## [Unreleased]
 * no unreleased changes *
 
+## 8.0.5 / 2026-07-30
+### Fixed
+* Test against ruby 4.0
+* Support patch releases of Rails after the current minor revision 8.0.5.0
+
 ## 8.0.4 / 2025-11-24
 * Support patch releases of Rails after the current minor revision 8.0.4.0
 
diff --git a/code_safety.yml b/code_safety.yml
index db3058f..afea11c 100644
--- a/code_safety.yml
+++ b/code_safety.yml
@@ -4,14 +4,18 @@ file safety:
     comments:
     reviewed_by: brian.shand
     safe_revision: d427bd0ab9302c9e275529b7e49e6c49b10757c4
+  ".github/dependabot.yml":
+    comments:
+    reviewed_by: brian.shand
+    safe_revision: f863f8ced268e16724a470dfb02c3a5cadbb4071
   ".github/workflows/lint.yml":
     comments:
     reviewed_by: brian.shand
-    safe_revision: a89191bc9471f8333e4c93b670131f3259c0046c
+    safe_revision: cdbb4f4b40941175f156c7a743941c5102b2c891
   ".github/workflows/test.yml":
     comments:
     reviewed_by: brian.shand
-    safe_revision: a89191bc9471f8333e4c93b670131f3259c0046c
+    safe_revision: cdbb4f4b40941175f156c7a743941c5102b2c891
   ".gitignore":
     comments:
     reviewed_by: brian.shand
@@ -23,7 +27,7 @@ file safety:
   CHANGELOG.md:
     comments:
     reviewed_by: brian.shand
-    safe_revision: 2dfcf19601bf5b36b6240827615197c974ccefbc
+    safe_revision: fc7642b6bafb8953bc14ff19d90343750817db55
   CODE_OF_CONDUCT.md:
     comments:
     reviewed_by: brian.shand
@@ -43,11 +47,15 @@ file safety:
   Rakefile:
     comments:
     reviewed_by: brian.shand
-    safe_revision: fa31b25843398d902bbbde52a8c12aca8805fb70
+    safe_revision: f8d6273a23c1f5f77c5705e92f951e105397281a
+  SECURITY.md:
+    comments:
+    reviewed_by: brian.shand
+    safe_revision: f863f8ced268e16724a470dfb02c3a5cadbb4071
   activemodel-caution.gemspec:
     comments:
     reviewed_by: brian.shand
-    safe_revision: a89191bc9471f8333e4c93b670131f3259c0046c
+    safe_revision: f863f8ced268e16724a470dfb02c3a5cadbb4071
   lib/active_model/caution/included.rb:
     comments:
     reviewed_by: brian.shand
@@ -59,7 +67,7 @@ file safety:
   lib/active_model/caution/version.rb:
     comments:
     reviewed_by: brian.shand
-    safe_revision: 2dfcf19601bf5b36b6240827615197c974ccefbc
+    safe_revision: fc7642b6bafb8953bc14ff19d90343750817db55
   lib/active_model/cautioner.rb:
     comments:
     reviewed_by: brian.shand
@@ -131,4 +139,4 @@ file safety:
   test/test_helper.rb:
     comments:
     reviewed_by: brian.shand
-    safe_revision: b0428cf00c1de41a4e17dcee4dbbc609309ec54e
+    safe_revision: f8d6273a23c1f5f77c5705e92f951e105397281a
diff --git a/lib/active_model/caution/version.rb b/lib/active_model/caution/version.rb
index 568c770..089bdac 100644
--- a/lib/active_model/caution/version.rb
+++ b/lib/active_model/caution/version.rb
@@ -1,6 +1,6 @@
 module ActiveModel
   module Caution
-    RAILS_VERSION = '8.0.4'.freeze
+    RAILS_VERSION = '8.0.5'.freeze
     GEM_REVISION  = '0'.freeze
 
     # Gem version: