diff --git a/.github/workflows/ci-test-ginkgo.yml b/.github/workflows/ci-test-ginkgo.yml
index 401014dd6..a31707e4d 100644
--- a/.github/workflows/ci-test-ginkgo.yml
+++ b/.github/workflows/ci-test-ginkgo.yml
@@ -25,7 +25,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, ubuntu-18.04]
+        os: [ubuntu-20.04]
         runtime: ["docker", "containerd", "crio"]
     steps:
       - uses: actions/checkout@v2
diff --git a/.github/workflows/ci-test-go.yml b/.github/workflows/ci-test-go.yml
index 914847d54..736962e1a 100644
--- a/.github/workflows/ci-test-go.yml
+++ b/.github/workflows/ci-test-go.yml
@@ -8,7 +8,7 @@ on:
 
 jobs:
   go-fmt:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
 
@@ -21,7 +21,7 @@ jobs:
         working-directory: KubeArmor
 
   go-lint:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
 
@@ -35,7 +35,7 @@ jobs:
           path: "./KubeArmor/..."
 
   go-lint-tests:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
 
@@ -49,7 +49,7 @@ jobs:
           path: "./tests/..."
 
   go-sec:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
 
@@ -62,7 +62,7 @@ jobs:
         working-directory: KubeArmor
 
   license:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
 
diff --git a/.github/workflows/ci-test-local.yml b/.github/workflows/ci-test-local.yml
index 59a6526d2..67299a750 100644
--- a/.github/workflows/ci-test-local.yml
+++ b/.github/workflows/ci-test-local.yml
@@ -25,7 +25,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, ubuntu-18.04]
+        os: [ubuntu-20.04]
         runtime: ["docker", "containerd", "crio"]
     steps:
       - uses: actions/checkout@v2
diff --git a/.github/workflows/ci-test-runtime.yml b/.github/workflows/ci-test-runtime.yml
index 773d247bf..bd10ea882 100644
--- a/.github/workflows/ci-test-runtime.yml
+++ b/.github/workflows/ci-test-runtime.yml
@@ -19,11 +19,7 @@ on:
 jobs:
   build:
     name: Test KubeArmor in Runtime
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, ubuntu-18.04]
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
         with:
diff --git a/.github/workflows/ci-test-systemd.yml b/.github/workflows/ci-test-systemd.yml
index d8d16e777..490287862 100644
--- a/.github/workflows/ci-test-systemd.yml
+++ b/.github/workflows/ci-test-systemd.yml
@@ -19,11 +19,7 @@ on:
 jobs:
   build:
     name: Test KubeArmor in Systemd Mode
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, ubuntu-18.04]
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
         with: