diff --git a/Cargo.lock b/Cargo.lock
index 72c92c5c..c93bdb5e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3034,9 +3034,9 @@ dependencies = [
 
 [[package]]
 name = "splines"
-version = "4.4.2"
+version = "5.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3278aafb315f972aa58d958e3f6b8ef60ceb7723bfedfbd00399c73ed0570583"
+checksum = "b882be9bf6b37258bfba80ed5b5eeccccd6700bfbaca202bbd53e4c13bf3daa7"
 dependencies = [
  "serde",
 ]
diff --git a/substrate/Cargo.toml b/substrate/Cargo.toml
index 0f5cc131..24435db5 100644
--- a/substrate/Cargo.toml
+++ b/substrate/Cargo.toml
@@ -21,7 +21,7 @@ slotmap = "1"
 downcast-rs = "2"
 indexmap = { version = "2", features = ["serde"] }
 num = { version = "0.4", features = ["serde"] }
-splines = { version = "4", features = ["serde"] }
+splines = { version = "5", features = ["serde"] }
 derive-where = "1"
 
 config = { version = "0.4.1", registry = "substrate", path = "../config" }