diff --git a/vsts/build.yaml b/vsts/build.yaml
index f9a3b9d91..717fd2e37 100644
--- a/vsts/build.yaml
+++ b/vsts/build.yaml
@@ -1,3 +1,13 @@
+trigger:
+  branches:
+    include:
+    - main
+
+pr:
+  branches:
+    include:
+    - main
+
 resources:
 - repo: self
 
diff --git a/vsts/dps-e2e.yaml b/vsts/dps-e2e.yaml
index 72987cca7..863bc9621 100644
--- a/vsts/dps-e2e.yaml
+++ b/vsts/dps-e2e.yaml
@@ -1,3 +1,13 @@
+trigger:
+  branches:
+    include:
+    - main
+
+pr:
+  branches:
+    include:
+    - main
+
 resources:
 - repo: self
 #Multi-configuration and multi-agent job options are not exported to YAML. Configure these options using documentation guidance: https://docs.microsoft.com/vsts/pipelines/process/phases
diff --git a/vsts/python-e2e.yaml b/vsts/python-e2e.yaml
index 7fb8309b3..304036db0 100644
--- a/vsts/python-e2e.yaml
+++ b/vsts/python-e2e.yaml
@@ -1,3 +1,13 @@
+trigger:
+  branches:
+    include:
+    - main
+
+pr:
+  branches:
+    include:
+    - main
+
 name: $(BuildID)_$(BuildDefinitionName)_$(SourceBranchName) 
 
 variables: