diff --git a/configs/components/ruby-3.2.rb b/configs/components/ruby-3.2.rb
index afe46828..364ea4ed 100644
--- a/configs/components/ruby-3.2.rb
+++ b/configs/components/ruby-3.2.rb
@@ -82,7 +82,7 @@
 
   special_flags = " --prefix=#{ruby_dir} --with-opt-dir=#{settings[:prefix]} "
 
-  if (platform.is_debian? && platform.os_version.to_i >= 13) || (platform.is_ubuntu? && platform.os_version =~ /25.04/ || platform.is_sles? && platform.os_version.to_i >= 16)
+  if (platform.is_debian? && platform.os_version.to_i >= 13) || (platform.is_ubuntu? && platform.os_version.to_f >= 25.04 || platform.is_sles? && platform.os_version.to_i >= 16)
     # A problem with --enable-dtrace, which I suspect may be because of GCC on the Trixie image.
     # Check if this is still needed next time we bump Ruby and/or bump the Debian 13
     # container to the release version.
diff --git a/configs/components/ruby-selinux.rb b/configs/components/ruby-selinux.rb
index c37729fd..5c8c3f30 100644
--- a/configs/components/ruby-selinux.rb
+++ b/configs/components/ruby-selinux.rb
@@ -51,7 +51,7 @@
     pkg.sha256sum 'ec2d2789f931152d21c1db1eb4bc202ce4eccede34d9be9e360e3b45243cee2c'
     pkg.build_requires 'python3-setuptools'
     pkg.url "https://github.com/SELinuxProject/selinux/releases/download/#{pkg.get_version}/libselinux-#{pkg.get_version}.tar.gz"
-  when /^fedora-43-/
+  when /^(fedora-43-|ubuntu-26.04)/
     pkg.version '3.9'
     pkg.sha256sum 'e7ee2c01dba64a0c35c9d7c9c0e06209d8186b325b0638a0d83f915cc3c101e8'
     pkg.build_requires 'python3-setuptools'
diff --git a/configs/platforms/ubuntu-26.04-aarch64.rb b/configs/platforms/ubuntu-26.04-aarch64.rb
new file mode 100644
index 00000000..eb4c0d14
--- /dev/null
+++ b/configs/platforms/ubuntu-26.04-aarch64.rb
@@ -0,0 +1,14 @@
+platform 'ubuntu-26.04-aarch64' do |plat|
+  plat.inherit_from_default
+
+  packages = %w[
+    libbz2-dev
+    libreadline-dev
+    libselinux1-dev
+    gcc
+    swig
+    systemtap-sdt-dev
+    zlib1g-dev
+  ]
+  plat.provision_with "export DEBIAN_FRONTEND=noninteractive && apt-get update -qq && apt-get install -qy --no-install-recommends #{packages.join(' ')}"
+end
diff --git a/configs/platforms/ubuntu-26.04-amd64.rb b/configs/platforms/ubuntu-26.04-amd64.rb
new file mode 100644
index 00000000..bc1c9ab8
--- /dev/null
+++ b/configs/platforms/ubuntu-26.04-amd64.rb
@@ -0,0 +1,14 @@
+platform 'ubuntu-26.04-amd64' do |plat|
+  plat.inherit_from_default
+
+  packages = %w[
+    libbz2-dev
+    libreadline-dev
+    libselinux1-dev
+    gcc
+    swig
+    systemtap-sdt-dev
+    zlib1g-dev
+  ]
+  plat.provision_with "export DEBIAN_FRONTEND=noninteractive && apt-get update -qq && apt-get install -qy --no-install-recommends #{packages.join(' ')}"
+end
diff --git a/configs/platforms/ubuntu-26.04-armhf.rb b/configs/platforms/ubuntu-26.04-armhf.rb
new file mode 100644
index 00000000..ebbb9c1c
--- /dev/null
+++ b/configs/platforms/ubuntu-26.04-armhf.rb
@@ -0,0 +1,14 @@
+platform 'ubuntu-26.04-armhf' do |plat|
+  plat.inherit_from_default
+
+  packages = %w[
+    libbz2-dev
+    libreadline-dev
+    libselinux1-dev
+    gcc
+    swig
+    systemtap-sdt-dev
+    zlib1g-dev
+  ]
+  plat.provision_with "export DEBIAN_FRONTEND=noninteractive && apt-get update -qq && apt-get install -qy --no-install-recommends #{packages.join(' ')}"
+end