diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
index a69fad0..05028b5 100644
--- a/.github/workflows/ccpp.yml
+++ b/.github/workflows/ccpp.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ${{ matrix.ubuntuOS }}
     strategy:
       matrix:
-        ubuntuOS: [ubuntu-18.04, ubuntu-20.04, ubuntu-latest]
+        ubuntuOS: [ ubuntu-20.04, ubuntu-latest]
       fail-fast: false
     steps:
     - uses: actions/checkout@v1
diff --git a/.github/workflows/pythonPublish.yml b/.github/workflows/pythonPublish.yml
index 6aa1665..9c7682f 100644
--- a/.github/workflows/pythonPublish.yml
+++ b/.github/workflows/pythonPublish.yml
@@ -11,11 +11,11 @@ jobs:
     name: Compile for ${{ matrix.OS }} using ${{ matrix.python }} and upload on packages manager
     strategy:
       matrix:
-        OS: [ ubuntu-18.04, windows-latest, macOS-latest]
+        OS: [ ubuntu-20.04, windows-latest, macOS-latest]
         python: ['3.7', '3.8', '3.9','3.10','3.11', 'pypy-3.7', 'pypy-3.8', 'pypy-3.9' ]
         arch: [ x64 ]
         include:
-          - os: ubuntu-18.04
+          - os: ubuntu-20.04
             python: '3.6'
             arch: x64
       fail-fast: false
diff --git a/.github/workflows/pythonPublishTest.yml b/.github/workflows/pythonPublishTest.yml
index 79958d1..f1f4c46 100644
--- a/.github/workflows/pythonPublishTest.yml
+++ b/.github/workflows/pythonPublishTest.yml
@@ -14,11 +14,11 @@ jobs:
     name: Compile for ${{ matrix.os }} using ${{ matrix.python }}-${{ matrix.arch }} and upload on packages manager
     strategy:
       matrix:
-        OS: [ ubuntu-18.04, windows-latest, macOS-latest]
+        OS: [ ubuntu-20.04, windows-latest, macOS-latest]
         python: ['3.7', '3.8', '3.9','3.10','3.11', 'pypy-3.7', 'pypy-3.8', 'pypy-3.9' ]
         arch: [ x64 ]
         include:
-          - os: ubuntu-18.04
+          - os: ubuntu-20.04
             python: '3.6'
             arch: x64
       fail-fast: false
diff --git a/.gitignore b/.gitignore
index b81b556..9443ac4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -62,3 +62,4 @@ build/python-build/dist
 build/PyDevAlgo
 build/algosName.config
 *.asv
+*.rb-e