diff --git a/Weather/SerialReader/deploy/azure-pipelines.yml b/Weather/SerialReader/deploy/azure-pipelines.yml
index 1a0dfe7..be8e4c2 100644
--- a/Weather/SerialReader/deploy/azure-pipelines.yml
+++ b/Weather/SerialReader/deploy/azure-pipelines.yml
@@ -34,7 +34,7 @@ steps:
 - task: Bash@3
   inputs:
     targetType: 'inline'
-    script: 'sed -i s/#TAG#/$(TAG)/ Weather/SerialReader/deploy/manifest.yaml'
+    script: 'sed -i s/#TAG#/$TAG/ Weather/SerialReader/deploy/manifest.yaml'
   env:
     Tag: $(Build.BuildNumber)