diff --git a/pyproject.toml b/pyproject.toml
index f6f80b8160d9fcb2e92ae6e6790c6c9106f69e37..2e113c0f811b339f8802b8aa40617da61d54e4f3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@
 
 [project]
     name = "bob.measure"
-    version = "6.1.1b0"
+    version = "6.1.1b1"
     requires-python = ">=3.9"
     description = "Evaluation metrics for Bob"
     dynamic = ["readme"]