diff --git a/Cargo.toml b/Cargo.toml
index ec2e405..8f70ce4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,6 +11,6 @@ keywords = ["preferences", "user", "data", "persistent", "storage"]
 license = "MIT"
 
 [dependencies]
-serde = "*"
-serde_json = "*"
-serde_macros = "*"
\ No newline at end of file
+serde = "0.7.*"
+serde_json = "0.7.*"
+serde_macros = "0.7.*"
\ No newline at end of file