diff --git a/Cargo.lock b/Cargo.lock
index 3756822..ee66ee7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1545,9 +1545,9 @@ dependencies = [
 
 [[package]]
 name = "npyz"
-version = "0.8.3"
+version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13f27ea175875c472b3df61ece89a6d6ef4e0627f43704e400c782f174681ebd"
+checksum = "9f0e759e014e630f90af745101b614f761306ddc541681e546649068e25ec1b9"
 dependencies = [
  "byteorder",
  "num-bigint",
diff --git a/crates/sbv2_core/Cargo.toml b/crates/sbv2_core/Cargo.toml
index a8c60aa..b35b3e8 100644
--- a/crates/sbv2_core/Cargo.toml
+++ b/crates/sbv2_core/Cargo.toml
@@ -16,7 +16,7 @@ env_logger.workspace = true
 hound = "3.5.1"
 jpreprocess = { version = "0.12.0", features = ["naist-jdic"] }
 ndarray.workspace = true
-npyz = { version = "0.8.3", optional = true }
+npyz = { version = "0.8.4", optional = true }
 num_cpus = "1.16.0"
 once_cell.workspace = true
 ort = { git = "https://github.com/pykeio/ort.git", version = "2.0.0-rc.9", optional = true }