diff --git a/.github/workflows/fuzzr.yml b/.github/workflows/fuzzr.yml
index a9952a3..90f3249 100644
--- a/.github/workflows/fuzzr.yml
+++ b/.github/workflows/fuzzr.yml
@@ -27,7 +27,7 @@ env:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
     steps:
     - uses: actions/checkout@v6
     - uses: ruby/setup-ruby@v1
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 76cf01f..0b9d26b 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -39,38 +39,38 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-22.04
-            CC: gcc-9
-            CXX: g++-9
-            ruby: '2.5'
-            PackageDeps: g++-9
-          - os: ubuntu-22.04
-            CC: gcc-9
-            CXX: g++-9
-            ruby: '2.6'
-            PackageDeps: g++-9
-          - os: ubuntu-22.04
-            CC: gcc-10
-            CXX: g++-10
-            ruby: '2.7'
-            PackageDeps: g++-10
-          - os: ubuntu-22.04
-            CC: gcc-11
-            CXX: g++-11
+          - os: ubuntu-24.04
+            CC: gcc-13
+            CXX: g++-13
             ruby: '3.0'
-            PackageDeps: g++-11
-          - os: ubuntu-22.04
-            CC: gcc-12
-            CXX: g++-12
-            ruby: '3.1'
-            PackageDeps: g++-12
+            PackageDeps: g++-13
+            make_flags: '--release'
           - os: ubuntu-24.04
             CC: gcc-13
             CXX: g++-13
-            ruby: '3.2'
+            ruby: '3.0'
+            PackageDeps: g++-13
+            make_flags: '--debug'
+          - os: ubuntu-24.04
+            CC: gcc-13
+            CXX: g++-13
+            ruby: '3.1'
             PackageDeps: g++-13
+            make_flags: '--release'
+          - os: ubuntu-24.04
+            CC: gcc-14
+            CXX: g++-14
+            ruby: '3.2'
+            PackageDeps: g++-14
+            make_flags: '--release'
+          - os: ubuntu-24.04
+            CC: gcc-14
+            CXX: g++-14
+            ruby: '3.2'
+            PackageDeps: g++-14
+            make_flags: '--debug'
     runs-on: ${{ matrix.os }}
-    name: ${{ matrix.os }} ${{ matrix.CXX }} ruby-${{ matrix.ruby }}
+    name: ${{ matrix.os }} ${{ matrix.CXX }} ruby-${{ matrix.ruby }} ${{ matrix.make_flags }}
     env:
       CC: ${{ matrix.CC }}
       CXX: ${{ matrix.CXX }}
@@ -129,7 +129,7 @@ jobs:
         $X11_BASE_ROOT/bin/brix11 gen build workspace.mwc -- gen build $TAOX11_ROOT/examples -- gen build $TAOX11_ROOT/orbsvcs/tests -- gen build $TAOX11_ROOT/tests
     - name: Run brix11 make
       run: |
-        $X11_BASE_ROOT/bin/brix11 make -N $X11_BASE_ROOT -- make -N $TAOX11_ROOT/examples -- make -N $TAOX11_ROOT/orbsvcs/tests -- make -N $TAOX11_ROOT/tests
+        $X11_BASE_ROOT/bin/brix11 make ${{ matrix.make_flags }} -N $X11_BASE_ROOT -- make ${{ matrix.make_flags }} -N $TAOX11_ROOT/examples -- make ${{ matrix.make_flags }} -N $TAOX11_ROOT/orbsvcs/tests -- make ${{ matrix.make_flags }} -N $TAOX11_ROOT/tests
     - name: Install necessary ruby gems
       run: |
         gem install asciidoctor:2.0.15 coderay
diff --git a/README.adoc b/README.adoc
index 7865223..ac31a4f 100644
--- a/README.adoc
+++ b/README.adoc
@@ -18,7 +18,7 @@ Before bootstrapping TAOX11 make sure you have installed the following prerequis
 [cols="<,<",options="header",]
 |=========================================
 |Prerequisite |Package name
-|ruby 2.5 through 3.1.2 |ruby
+|ruby 3.0 through 3.1.2 |ruby
 |perl v5.10 through v5.36 |perl
 |git |git
 |=========================================
@@ -28,8 +28,8 @@ On Linux make sure you have installed the following additional prerequisites
 [cols="<,<",options="header",]
 |=========================================
 |Prerequisite |Package name
-|gcc version 11 or newer |gcc
-|g++ version 11 or newer |gcc-c++
+|gcc version 13 or newer |gcc
+|g++ version 13 or newer |gcc-c++
 |GNU make version 3.81 or newer |make
 |GNU Bash|bash
 |=========================================