diff --git a/instant-distance-py/Cargo.toml b/instant-distance-py/Cargo.toml
index eafab40..e8e3357 100644
--- a/instant-distance-py/Cargo.toml
+++ b/instant-distance-py/Cargo.toml
@@ -19,4 +19,4 @@ bincode = "1.3.1"
 instant-distance = { version = "0.6", path = "../instant-distance", features = ["with-serde"] }
 pyo3 = { version = "0.18.0", features = ["extension-module"] }
 serde = { version = "1", features = ["derive"] }
-serde-big-array = "0.4.1"
+serde-big-array = "0.5.0"
diff --git a/instant-distance/Cargo.toml b/instant-distance/Cargo.toml
index b88789c..0317d8c 100644
--- a/instant-distance/Cargo.toml
+++ b/instant-distance/Cargo.toml
@@ -22,7 +22,7 @@ parking_lot = "0.12"
 rand = { version = "0.8", features = ["small_rng"] }
 rayon = "1.5"
 serde = { version = "1.0.118", features = ["derive"], optional = true }
-serde-big-array = { version = "0.4.1", optional = true }
+serde-big-array = { version = "0.5.0", optional = true }
 
 [dev-dependencies]
 bencher = "0.1.5"