diff --git a/Cargo.toml b/Cargo.toml
index a8b1470..781bacf 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,3 +15,6 @@ path = "source/lib.rs"
 
 [dependencies]
 md5 = "0.7.0"
+
+[dev-dependencies]
+insta = "1.14.0"