diff --git a/train-docs/src/main/java/org/springframework/cloud/internal/ArtifactFetcher.java b/train-docs/src/main/java/org/springframework/cloud/internal/ArtifactFetcher.java
index 8465774..1b3a6e4 100644
--- a/train-docs/src/main/java/org/springframework/cloud/internal/ArtifactFetcher.java
+++ b/train-docs/src/main/java/org/springframework/cloud/internal/ArtifactFetcher.java
@@ -103,6 +103,7 @@ class ArtifactFetcher {
 			String[] splitVersion = version.split("\\.");
 			sourcesUrls.add(sourcesUrl + splitVersion[0] + "." + splitVersion[1] + ".x.zip");
 			// fallback
+			sourcesUrls.add(sourcesUrl + "main.zip");
 			sourcesUrls.add(sourcesUrl + "master.zip");
 		}
 		else {