diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7a42eae..ed4fbdd 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,7 +8,7 @@ jobs:
 
   test:
     name: Test
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-16.04
     steps:
 
     - name: Set up Go 1.13