diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 6433772..29621d7 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,7 +9,7 @@ on:
 jobs:
   test:
     name: Test
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     steps:
       - name: Set up Go
         uses: actions/setup-go@v2
@@ -26,7 +26,7 @@ jobs:
           file: .coverprofile
   build:
     name: Build
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     needs: [test]
     steps:
       - name: Set up Go
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index a7e2fcb..f2efe1b 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   goreleaser:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     steps:
       - name: Checkout
         uses: actions/checkout@v2