diff --git a/Cargo.toml b/Cargo.toml
index c4422fe..89956af 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ name = "chrono"
 
 [dependencies]
 time = "0.1.14"
-regex = "*"
-regex_macros = "*"
+regex = "0.1.12"
+regex_macros = "0.1.6"