diff --git a/pyproject.toml b/pyproject.toml
index 2c2941e5d..b6a5f2797 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "concrete-numpy"
-version = "0.9.0-rc3"
+version = "0.9.0-rc4"
 description = "Concrete Numpy is an open-source library which simplifies the use of fully homomorphic encryption (FHE)."
 license = "BSD-3-Clause"
 authors = [