diff --git a/pyproject.toml b/pyproject.toml
index 062bdb9..1fa0fa8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,7 +47,7 @@ dependencies = [
     # NiChart_DLMUSE 0.1.7 dependencies
     "nnunetv2 == 2.5.1",
     "acvl_utils == 0.2.5",
-    "blosc2 == 3.0.0b4"
+    "blosc2 == 4.3.0"
 ]
 dynamic = ["version"]