diff --git a/.azure/modules/containerApp/main.bicep b/.azure/modules/containerApp/main.bicep
index 384f69489..76e9809e9 100644
--- a/.azure/modules/containerApp/main.bicep
+++ b/.azure/modules/containerApp/main.bicep
@@ -28,6 +28,9 @@ param resources object?
 @description('The suffix for the revision of the container app')
 param revisionSuffix string?
 
+// Container app revision name does not allow '.' character
+replace(revisionSuffix, '.', '-')
+
 var probes = [
   {
     periodSeconds: 5