diff --git a/Cargo.toml b/Cargo.toml
index c0b01d5..e409225 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,7 @@ include = ["Cargo.toml", "LICENSE", "src", "README.md"]
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-sptr = "0.2.3"
+sptr = "0.3.1"
 
 [dev-dependencies]
 paste = "1.0.7"