diff --git a/postgres-protocol/Cargo.toml b/postgres-protocol/Cargo.toml
index 7ad9d499..4705e97d 100644
--- a/postgres-protocol/Cargo.toml
+++ b/postgres-protocol/Cargo.toml
@@ -15,7 +15,7 @@ bytes = "0.5"
 fallible-iterator = "0.2"
 generic-array = "0.13"
 hmac = "0.7"
-md5 = "0.6"
+md5 = "0.7"
 memchr = "2.0"
 rand = "0.7"
 sha2 = "0.8"