diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d8ff8690..ff77aa72 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-22.04, ubuntu-24.04, ubuntu-22.04-arm, ubuntu-24.04-arm, macos-15-intel, macos-14 ]
+        os: [ ubuntu-22.04, ubuntu-24.04, ubuntu-26.04, ubuntu-22.04-arm, ubuntu-24.04-arm, ubuntu-26.04-arm, macos-15-intel, macos-14 ]
         ruby: [jruby-10.0.6.0]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/copy_to_separate_releases.rb b/copy_to_separate_releases.rb
index fd3ee4ac..9debffc8 100644
--- a/copy_to_separate_releases.rb
+++ b/copy_to_separate_releases.rb
@@ -16,6 +16,8 @@ def sh(*args, **kwargs)
   'ubuntu-22.04-arm64' => 'ubuntu-22.04-arm64',
   'ubuntu-24.04'       => 'ubuntu-24.04-x64',
   'ubuntu-24.04-arm64' => 'ubuntu-24.04-arm64',
+  'ubuntu-26.04'       => 'ubuntu-26.04-x64',
+  'ubuntu-26.04-arm64' => 'ubuntu-26.04-arm64',
   'windows-latest'     => 'windows-x64',
   'windows-arm64'      => 'windows-arm64',
 }