diff --git a/src/uu/stdbuf/src/libstdbuf/Cargo.toml b/src/uu/stdbuf/src/libstdbuf/Cargo.toml
index 1392b3583..ee71c07d5 100644
--- a/src/uu/stdbuf/src/libstdbuf/Cargo.toml
+++ b/src/uu/stdbuf/src/libstdbuf/Cargo.toml
@@ -24,4 +24,4 @@ cpp = "0.5"
 libc = { workspace = true }
 
 [build-dependencies]
-cpp_build = "0.5"
+cpp_build = "0.5.9"