diff --git a/Cargo.toml b/Cargo.toml
index f7c58b62..383ea704 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,15 +11,15 @@ repository = "https://github.com/ruma/ruma-identifiers"
 version = "0.7.0"
 
 [dependencies]
-lazy_static = "0.2.2"
-rand = "0.3.15"
-regex = "0.2.1"
-serde = "0.9.1"
-url = "1.4.0"
+lazy_static = "0.2"
+rand = "0.3"
+regex = "0.2"
+serde = "0.9"
+url = "1.4"
 
 [dependencies.diesel]
 optional = true
-version = "0.9.0"
+version = "0.10"
 
 [dev-dependencies]
-serde_json = "0.9.1"
+serde_json = "0.9"
diff --git a/src/lib.rs b/src/lib.rs
index 48360e3c..5b75256c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,7 +2,9 @@
 //! for events, rooms, room aliases, and users.
 
 #![feature(try_from)]
+#![deny(missing_debug_implementations)]
 #![deny(missing_docs)]
+#![deny(warnings)]
 
 #[macro_use]
 extern crate lazy_static;