diff --git a/buildSrc/src/main/java/org/springframework/boot/build/AsciidoctorConventions.java b/buildSrc/src/main/java/org/springframework/boot/build/AsciidoctorConventions.java
index 2c00c50039..ca947076fe 100644
--- a/buildSrc/src/main/java/org/springframework/boot/build/AsciidoctorConventions.java
+++ b/buildSrc/src/main/java/org/springframework/boot/build/AsciidoctorConventions.java
@@ -138,7 +138,7 @@ class AsciidoctorConventions {
 
 	private String determineGitHubTag(Project project) {
 		String version = "v" + project.getVersion();
-		return (version.endsWith("-SNAPSHOT")) ? "main" : version;
+		return (version.endsWith("-SNAPSHOT")) ? "2.5.x" : version;
 	}
 
 	private void configureOptions(AbstractAsciidoctorTask asciidoctorTask) {