diff --git a/Cargo.lock b/Cargo.lock
index 3ba040e4..c669b020 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,16 +4,16 @@ version = "0.10.0"
 dependencies = [
  "bit-vec 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "clap 2.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy 0.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clap 2.11.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.89 (registry+https://github.com/rust-lang/crates.io-index)",
  "crc 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "image 0.10.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.4.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
- "libz-sys 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libz-sys 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "miniz-sys 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 0.1.73 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.1.75 (registry+https://github.com/rust-lang/crates.io-index)",
  "scoped-pool 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -27,7 +27,7 @@ dependencies = [
 
 [[package]]
 name = "ansi_term"
-version = "0.8.0"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -47,34 +47,35 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "clap"
-version = "2.10.0"
+version = "2.11.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "ansi_term 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ansi_term 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
- "strsim 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "term_size 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "strsim 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "term_size 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-segmentation 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-width 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "vec_map 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "clippy"
-version = "0.0.85"
+version = "0.0.89"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "clippy_lints 0.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy_lints 0.0.89 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "clippy_lints"
-version = "0.0.85"
+version = "0.0.89"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "quine-mc_cluskey 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "semver 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.1.30 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -99,7 +100,7 @@ name = "enum_primitive"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -107,13 +108,13 @@ name = "flate2"
 version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "miniz-sys 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "gcc"
-version = "0.3.32"
+version = "0.3.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -130,8 +131,8 @@ dependencies = [
  "enum_primitive 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-iter 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-rational 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-rational 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "png 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -161,16 +162,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.15"
+version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libz-sys"
-version = "1.0.5"
+version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "gcc 0.3.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gcc 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -184,7 +185,7 @@ name = "memchr"
 version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -192,8 +193,8 @@ name = "miniz-sys"
 version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "gcc 0.3.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gcc 0.3.35 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -203,21 +204,21 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "num"
-version = "0.1.34"
+version = "0.1.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "num-integer 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-iter 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "num-bigint"
-version = "0.1.33"
+version = "0.1.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "num-integer 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -227,7 +228,7 @@ name = "num-integer"
 version = "0.1.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num-traits 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -236,23 +237,23 @@ version = "0.1.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "num-integer 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "num-rational"
-version = "0.1.32"
+version = "0.1.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num-bigint 0.1.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-bigint 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-integer 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "num-traits"
-version = "0.1.34"
+version = "0.1.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -260,7 +261,7 @@ name = "num_cpus"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -289,17 +290,17 @@ name = "rand"
 version = "0.3.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "regex"
-version = "0.1.73"
+version = "0.1.75"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aho-corasick 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "simd 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "thread_local 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "utf8-ranges 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -307,7 +308,7 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.3.4"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -345,15 +346,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "strsim"
-version = "0.4.1"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "term_size"
-version = "0.1.0"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -362,7 +365,7 @@ version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -386,6 +389,11 @@ name = "unicode-normalization"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "unicode-segmentation"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "unicode-width"
 version = "0.1.3"
@@ -418,54 +426,55 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
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diff --git a/Cargo.toml b/Cargo.toml
index f04fc096..90d35b48 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -38,7 +38,7 @@ version = "^2.2.5"
 
 [dependencies.clippy]
 optional = true
-version = "0.0.85"
+version = ">=0.0.85"
 
 [dependencies.regex]
 optional = true
diff --git a/src/main.rs b/src/main.rs
index afecfd86..2c47c279 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,11 @@
 #![cfg_attr(feature="dev", feature(plugin))]
 #![cfg_attr(feature="dev", plugin(clippy))]
+#![cfg_attr(feature="dev", warn(enum_glob_use))]
+#![cfg_attr(feature="dev", warn(if_not_else))]
+#![cfg_attr(feature="dev", warn(string_add))]
+#![cfg_attr(feature="dev", warn(string_add_assign))]
+#![warn(trivial_casts, trivial_numeric_casts, unused_import_braces)]
+#![deny(missing_debug_implementations, missing_copy_implementations)]
 
 extern crate oxipng;
 extern crate clap;
@@ -14,11 +20,9 @@ use std::fs::DirBuilder;
 use std::io::{Write, stderr};
 use std::path::PathBuf;
 
-const VERSION_STRING: &'static str = "0.10.0";
-
 fn main() {
     let matches = App::new("oxipng")
-        .version(VERSION_STRING)
+        .version(env!("CARGO_PKG_VERSION"))
         .author("Joshua Holmer <jholmer.in@gmail.com>")
         .about("Losslessly improves compression of PNG files")
         .arg(Arg::with_name("files")