diff --git a/Cargo.toml b/Cargo.toml
index 0180f3b..c1f967a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,6 +16,6 @@ name = "dtparse"
 
 [dependencies]
 chrono = "0.4"
-lazy_static = "*"
+lazy_static = "1.0"
 num-traits = "0.2"
 rust_decimal = "0.8"
\ No newline at end of file