diff --git a/.github/workflows/delfin_ci.yml b/.github/workflows/delfin_ci.yml
index ac59b04bd..0edf3da7e 100644
--- a/.github/workflows/delfin_ci.yml
+++ b/.github/workflows/delfin_ci.yml
@@ -7,8 +7,7 @@ jobs:
     strategy:
       max-parallel: 6
       matrix:
-        platform:
-          - ubuntu-18.04
+        platform: [ubuntu-18.04, ubuntu-20.04]
         python-version: [ 3.6, 3.7, 3.8 ]
 
     steps:
diff --git a/.github/workflows/delfin_e2e_test.yml b/.github/workflows/delfin_e2e_test.yml
index 1ae643308..b87c2b2e7 100644
--- a/.github/workflows/delfin_e2e_test.yml
+++ b/.github/workflows/delfin_e2e_test.yml
@@ -7,8 +7,7 @@ jobs:
     strategy:
       max-parallel: 6
       matrix:
-        platform:
-          - ubuntu-18.04
+        platform: [ubuntu-18.04, ubuntu-20.04]
         python-version: [ 3.6 ]
 
     steps: