diff --git a/MANIFOLD_VERSION b/MANIFOLD_VERSION
index 2bd9dba156..552bc38526 100644
--- a/MANIFOLD_VERSION
+++ b/MANIFOLD_VERSION
@@ -1 +1 @@
-v8.1.0
\ No newline at end of file
+v8.1.1-beta.1
\ No newline at end of file