diff --git a/manifests/windows.pp b/manifests/windows.pp
index 0425b20a..7ed0ab3d 100644
--- a/manifests/windows.pp
+++ b/manifests/windows.pp
@@ -63,7 +63,8 @@
     if $agent_version == 'latest' {
       $ensure_version = 'installed'
     } else {
-      $ensure_version = $agent_version
+      # While artifacts contain X.Y.Z in their name, their installed Windows versions are actually X.Y.Z.1
+      $ensure_version = "${agent_version}.1"
     }
 
     $hostname_option = $hostname ? { '' => {}, default => { 'HOSTNAME' => $hostname } }