diff --git a/nuke/Build.cs b/nuke/Build.cs
index 620b5af..a186fdf 100644
--- a/nuke/Build.cs
+++ b/nuke/Build.cs
@@ -89,7 +89,7 @@ class Build : NukeBuild
 
             if (ScheduledTargets.Contains(Default))
             {
-                Version = $"{Version}-ci.buildNumber}";
+                Version = $"{Version}-ci.{buildNumber}";
             }
             else if (ScheduledTargets.Contains(PrePublish))
             {