diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index ace8c8ddd..762c622b5 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -31,7 +31,7 @@ variables:
 jobs:
 - job: linux
   pool:
-    vmImage: ubuntu-latest
+    vmImage: ubuntu-18.04
   strategy:
     matrix:
       servers: