diff --git a/Cargo.toml b/Cargo.toml
index 11dc97c8..addfc237 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,15 +12,15 @@ version = "0.11.1"
 edition = "2018"
 
 [dependencies]
-lazy_static = "1.2"
-rand = "0.5"
-regex = "1.0"
-serde = "1.0"
-url = "1.7"
+lazy_static = "1.3.0"
+rand = "0.6.5"
+regex = "1.1.5"
+serde = "1.0.90"
+url = "1.7.2"
 
 [dependencies.diesel]
 optional = true
-version = "1.4"
+version = "1.4.2"
 
 [dev-dependencies]
-serde_json = "1.0"
+serde_json = "1.0.39"
diff --git a/src/lib.rs b/src/lib.rs
index d6ef9d65..9f144095 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,7 +1,6 @@
 //! Crate **ruma_identifiers** contains types for [Matrix](https://matrix.org/) identifiers
 //! for events, rooms, room aliases, and users.
 
-#![feature(try_from)]
 #![deny(missing_debug_implementations)]
 #![deny(missing_docs)]
 #![deny(warnings)]
@@ -13,7 +12,7 @@ use std::{
 };
 
 #[cfg(feature = "diesel")]
-use diesel::{FromSqlRow, sql_types::Text};
+use diesel::sql_types::Text;
 
 use lazy_static::lazy_static;
 use rand::{distributions::Alphanumeric, thread_rng, Rng};