diff --git a/crates/stdsimd-test/Cargo.toml b/crates/stdsimd-test/Cargo.toml
index 23033f8a4f..516b814884 100644
--- a/crates/stdsimd-test/Cargo.toml
+++ b/crates/stdsimd-test/Cargo.toml
@@ -9,4 +9,4 @@ simd-test-macro = { path = "../simd-test-macro" }
 backtrace = "0.3"
 cc = "1.0"
 lazy_static = "0.2"
-rustc-demangle = "0.1"
+rustc-demangle = "0.1.8"