diff --git a/convention/src/main/kotlin/io/gitlab/jfronny/scripts/SemanticVersion.kt b/convention/src/main/kotlin/io/gitlab/jfronny/scripts/SemanticVersion.kt
index a3cb36d..f9286df 100644
--- a/convention/src/main/kotlin/io/gitlab/jfronny/scripts/SemanticVersion.kt
+++ b/convention/src/main/kotlin/io/gitlab/jfronny/scripts/SemanticVersion.kt
@@ -47,7 +47,7 @@ data class SemanticVersion(val major: Int, val minor: Int, val patch: Int, val t
         private val number = Regex("[1-9][0-9]*|0")
         private val versionCore = Regex("($number)\\.($number)\\.($number)")
         private val legacyVersion = Regex("([vba]|rc)$versionCore(\\+$buildPattern)?")
-        private val restrictedSemver = Regex("$versionCore(-(?:alpha|beta|rc))?(\\+$buildPattern)?")
+        private val restrictedSemver = Regex("$versionCore(?:-(alpha|beta|rc))?(\\+$buildPattern)?")
 
         fun parse(source: String): SemanticVersion {
             val legacyMatch = legacyVersion.matchEntire(source)