diff --git a/Cargo.toml b/Cargo.toml
index 4b78fb2..d260ca9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,10 +26,10 @@ path = "src/lib.rs"
 
 [dependencies]
 native-tls = "0.2"
-regex = "0.2"
+regex = "1.0"
 bufstream = "0.1"
 imap-proto = "0.4.1"
 nom = "3.2.1"
 
 [dev-dependencies]
-base64 = "0.7"
+base64 = "0.9.2"