diff --git a/Chapter07/legacy-c-code/rust-digest/Cargo.toml b/Chapter07/legacy-c-code/rust-digest/Cargo.toml
index 8489423..ea0c078 100644
--- a/Chapter07/legacy-c-code/rust-digest/Cargo.toml
+++ b/Chapter07/legacy-c-code/rust-digest/Cargo.toml
@@ -6,7 +6,7 @@ edition = "2018"
 
 [lib]
 name = "digest"
-crate-type = ["cdylib"]
+crate-type = ["staticlib"]
 
 [dependencies]
 libc =  "0.2"