diff --git a/.github/workflows/pr-test.yml b/.github/workflows/pr-test.yml
index 112a2830..529cb0cd 100644
--- a/.github/workflows/pr-test.yml
+++ b/.github/workflows/pr-test.yml
@@ -47,7 +47,7 @@ env:
 
 jobs:
   UnitTest:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         go: [1.19.2]
diff --git a/.github/workflows/unit-test.yml b/.github/workflows/unit-test.yml
index c5fdebe9..8bebf468 100644
--- a/.github/workflows/unit-test.yml
+++ b/.github/workflows/unit-test.yml
@@ -51,7 +51,7 @@ env:
 
 jobs:
   unit-test:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         go: [1.19.2]