diff --git a/convention/src/main/kotlin/jf.autoversion.gradle.kts b/convention/src/main/kotlin/jf.autoversion.gradle.kts
index 42220b0..a056197 100644
--- a/convention/src/main/kotlin/jf.autoversion.gradle.kts
+++ b/convention/src/main/kotlin/jf.autoversion.gradle.kts
@@ -10,7 +10,7 @@ fun List<Tag>.filter(): Pair<Tag, Tag?>? {
     val envName = System.getenv("CI_COMMIT_TAG")?.ifEmpty { null }
     val current = envName?.let { v -> indexOfFirst { it.name == v } } ?: 0
     if (current == -1) throw IllegalStateException("Current tag ($envName) not found in tag list")
-    if (size == current) return get(current) to null
+    if (size == current + 1) return get(current) to null
 
     val ver = SemanticVersion.tryParse(get(current).name)
     // special case: some mod projects use the format 1.0.0+forge to classify builds for different loaders