diff --git a/generator/src/main/groovy/generator/ChangelogParser.groovy b/generator/src/main/groovy/generator/ChangelogParser.groovy
index a4d48d0..a80452c 100644
--- a/generator/src/main/groovy/generator/ChangelogParser.groovy
+++ b/generator/src/main/groovy/generator/ChangelogParser.groovy
@@ -34,7 +34,7 @@
     private static final String BUGTYPE_MARK = '** '
     private static final String ITEM_MARK = '    * '
     private static final Pattern ITEM_PATTERN = ~/\[(GROOVY-[0-9]+)\] - (.+)/
-    private static final String VERSION_PATTERN = /^((1\.)|[23]\.)/
+    private static final String VERSION_PATTERN = /^((1\.)|[234]\.)/
     public static final Map<String, String> INFO = [
             '1.1.0': 'Unreleased: renamed to 1.5.0',
             '1.9.0': 'Unreleased: renamed to 2.0.0',