diff --git a/azure-pipelines/official-build.yml b/azure-pipelines/official-build.yml
index 65bbf4b..b495b2e 100644
--- a/azure-pipelines/official-build.yml
+++ b/azure-pipelines/official-build.yml
@@ -12,6 +12,14 @@ trigger:
 # CI only, does not trigger on PRs.
 pr: none
 
+schedules:
+    - cron: '30 10 * * *'
+      displayName: Nightly build
+      always: true
+      branches:
+          include:
+              - v4.x
+
 resources:
     repositories:
         - repository: 1es
diff --git a/azure-pipelines/public-build.yml b/azure-pipelines/public-build.yml
index 58cf913..ed506ea 100644
--- a/azure-pipelines/public-build.yml
+++ b/azure-pipelines/public-build.yml
@@ -11,6 +11,14 @@ pr:
         include:
             - v4.x
 
+schedules:
+    - cron: '30 10 * * *'
+      displayName: Nightly build
+      always: true
+      branches:
+          include:
+              - v4.x
+
 resources:
     repositories:
         - repository: 1es