diff --git a/wee_alloc/Cargo.toml b/wee_alloc/Cargo.toml
index 4a0d777..7c3806b 100644
--- a/wee_alloc/Cargo.toml
+++ b/wee_alloc/Cargo.toml
@@ -37,7 +37,7 @@ memory_units = "0.4.0"
 cfg-if = "0.1.2"
 
 [dependencies.spin]
-version = "0.5"
+version = "0.8"
 optional = true
 default-features = false