diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index f91f0d1..5dfc1e2 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -14,6 +14,10 @@ variables:
   buildPlatform: 'Any CPU'
   buildConfiguration: 'Release'
 
+steps:
+- checkout: self
+  submodules: true
+
 steps:
 - task: NuGetToolInstaller@0