diff --git a/OvmfPkg/PlatformCI/.azurepipelines/Ubuntu-GCC5.yml b/OvmfPkg/PlatformCI/.azurepipelines/Ubuntu-GCC5.yml
index df6a62cd61..7117b86b81 100644
--- a/OvmfPkg/PlatformCI/.azurepipelines/Ubuntu-GCC5.yml
+++ b/OvmfPkg/PlatformCI/.azurepipelines/Ubuntu-GCC5.yml
@@ -10,8 +10,10 @@
 ##
 trigger:
   - master
+  - stable/*
 pr:
   - master
+  - stable/*
 
 jobs:
   - job: Platform_CI
diff --git a/OvmfPkg/PlatformCI/.azurepipelines/Windows-VS2019.yml b/OvmfPkg/PlatformCI/.azurepipelines/Windows-VS2019.yml
index dd19fff500..772dbec186 100644
--- a/OvmfPkg/PlatformCI/.azurepipelines/Windows-VS2019.yml
+++ b/OvmfPkg/PlatformCI/.azurepipelines/Windows-VS2019.yml
@@ -10,8 +10,10 @@
 ##
 trigger:
   - master
+  - stable/*
 pr:
   - master
+  - stable/*
 jobs:
   - job: Platform_CI
     variables: