diff --git a/Cargo.lock b/Cargo.lock
index 8391f38..9d1c161 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,17 +2,16 @@
 name = "watchexec"
 version = "1.8.4"
 dependencies = [
- "clap 2.22.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "env_logger 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clap 2.26.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "env_logger 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "globset 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "globset 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "mktemp 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "nix 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "notify 3.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nix 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "notify 4.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -36,7 +35,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "bitflags"
-version = "0.8.2"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -46,27 +45,41 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cfg-if"
-version = "0.1.0"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "clap"
-version = "2.22.2"
+version = "2.26.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bitflags 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "term_size 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-segmentation 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "term_size 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "textwrap 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-segmentation 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-width 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "vec_map 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vec_map 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
-name = "env_logger"
-version = "0.3.5"
+name = "conv"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "custom_derive 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "custom_derive"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "env_logger"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -74,7 +87,7 @@ name = "filetime"
 version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.29 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -89,7 +102,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "fsevent-sys 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.29 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -97,7 +110,7 @@ name = "fsevent-sys"
 version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.29 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -107,22 +120,22 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "globset"
-version = "0.1.4"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aho-corasick 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "inotify"
-version = "0.2.3"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.29 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -141,20 +154,37 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.21"
+version = "0.2.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "log"
-version = "0.3.7"
+version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "magenta"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "conv 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "magenta-sys 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "magenta-sys"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "memchr"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.29 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -163,13 +193,13 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "net2 0.2.27 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.31 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "time 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "time 0.1.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -179,7 +209,7 @@ version = "0.1.5"
 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)",
- "net2 0.2.27 (registry+https://github.com/rust-lang/crates.io-index)",
+ "net2 0.2.31 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -194,12 +224,12 @@ dependencies = [
 
 [[package]]
 name = "net2"
-version = "0.2.27"
+version = "0.2.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -210,68 +240,66 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.29 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "nix"
-version = "0.7.0"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bitflags 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "semver 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "notify"
-version = "3.0.1"
+version = "4.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "filetime 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "fsevent 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "fsevent-sys 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "inotify 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "inotify 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "time 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
  "walkdir 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rand"
-version = "0.3.15"
+version = "0.3.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "magenta 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "redox_syscall"
-version = "0.1.17"
+version = "0.1.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "regex"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aho-corasick 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "thread_local 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "thread_local 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "utf8-ranges 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "regex-syntax"
-version = "0.4.0"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -279,19 +307,6 @@ name = "rustc-serialize"
 version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "rustc_version"
-version = "0.1.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "semver 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "semver"
-version = "0.1.20"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "slab"
 version = "0.1.3"
@@ -299,46 +314,46 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "term_size"
-version = "0.2.3"
+version = "0.3.0"
 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 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
-name = "thread-id"
-version = "3.0.0"
+name = "textwrap"
+version = "0.7.0"
 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 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "term_size 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-width 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "thread_local"
-version = "0.3.3"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "thread-id 3.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "unreachable 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "time"
-version = "0.1.37"
+version = "0.1.38"
 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 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "unicode-segmentation"
-version = "1.1.0"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -348,7 +363,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "unreachable"
-version = "0.1.1"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -364,13 +379,13 @@ name = "uuid"
 version = "0.1.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "rand 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "vec_map"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -410,48 +425,50 @@ dependencies = [
 "checksum aho-corasick 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "500909c4f87a9e52355b26626d890833e9e1d53ac566db76c36faa984b889699"
 "checksum bitflags 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8dead7461c1127cf637931a1e50934eb6eee8bff2f74433ac7909e9afcee04a3"
 "checksum bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "aad18937a628ec6abcd26d1489012cc0e18c21798210f491af69ded9b881106d"
-"checksum bitflags 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1370e9fc2a6ae53aea8b7a5110edbd08836ed87c88736dfabccade1c2b44bff4"
+"checksum bitflags 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4efd02e230a02e18f92fc2735f44597385ed02ad8f831e7c1c1156ee5e1ab3a5"
 "checksum bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c129aff112dcc562970abb69e2508b40850dd24c274761bb50fb8a0067ba6c27"
-"checksum cfg-if 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "de1e760d7b6535af4241fca8bd8adf68e2e7edacc6b29f5d399050c5e48cf88c"
-"checksum clap 2.22.2 (registry+https://github.com/rust-lang/crates.io-index)" = "3cae8c5a1108961e9bafb1096b8cbb6a31c17ab1a276ce9b52334be99962f653"
-"checksum env_logger 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "15abd780e45b3ea4f76b4e9a26ff4843258dd8a3eed2775a0e7368c2e7936c2f"
+"checksum cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d4c819a1287eb618df47cc647173c5c4c66ba19d888a6e50d605672aed3140de"
+"checksum clap 2.26.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2267a8fdd4dce6956ba6649e130f62fb279026e5e84b92aa939ac8f85ce3f9f0"
+"checksum conv 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "78ff10625fd0ac447827aa30ea8b861fead473bb60aeb73af6c1c58caf0d1299"
+"checksum custom_derive 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "ef8ae57c4978a2acd8b869ce6b9ca1dfe817bff704c220209fdef2c0b75a01b9"
+"checksum env_logger 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3ddf21e73e016298f5cb37d6ef8e8da8e39f91f9ec8b0df44b7deb16a9f8cd5b"
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diff --git a/Cargo.toml b/Cargo.toml
index b850c21..beaed5a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,27 +20,26 @@ panic = "abort"
 
 [dependencies]
 glob = "0.2.11"
-globset = "0.1"
-lazy_static = "0.2.1"
-libc = "0.2.16"
-log = "0.3.6"
-notify = "3.0.0"
+globset = "0.2"
+lazy_static = "0.2.8"
+log = "0.3.8"
+notify = "4.0"
 
 [dev-dependencies]
 mktemp = "0.3.1"
 
 [dependencies.clap]
-version = "~2.22.2"
+version = "~2.26"
 default-features = false
 features = ["wrap_help"]
 
 [dependencies.env_logger]
-version = "0.3.5"
+version = "0.4"
 default-features = false
 features = []
 
 [target.'cfg(unix)'.dependencies]
-nix = "0.7.0"
+nix = "0.9"
 
 [target.'cfg(windows)'.dependencies]
 winapi = "0.2.8"
diff --git a/src/lib.rs b/src/lib.rs
index b0b5cd9..613f24a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,7 +2,6 @@
 extern crate clap;
 extern crate globset;
 extern crate env_logger;
-extern crate libc;
 #[macro_use]
 extern crate log;
 #[macro_use]
diff --git a/src/main.rs b/src/main.rs
index 2d7d558..9ee0cbf 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,7 +2,6 @@
 extern crate clap;
 extern crate globset;
 extern crate env_logger;
-extern crate libc;
 #[macro_use]
 extern crate log;
 #[macro_use]
diff --git a/src/process.rs b/src/process.rs
index 25f7bb4..bdeec9d 100644
--- a/src/process.rs
+++ b/src/process.rs
@@ -8,8 +8,9 @@ pub use self::imp::Process;
 
 #[cfg(target_family = "unix")]
 mod imp {
-    use libc::*;
-    use std::io::Result;
+    use nix::{self, Error};
+    use nix::libc::*;
+    use std::io::{self, Result};
     use std::path::PathBuf;
     use std::process::Command;
     use std::sync::*;
@@ -21,12 +22,19 @@ mod imp {
         cvar: Condvar,
     }
 
+    fn from_nix_error(err: nix::Error) -> io::Error {
+        match err {
+            Error::Sys(errno) => io::Error::from_raw_os_error(errno as i32),
+            Error::InvalidPath => io::Error::new(io::ErrorKind::InvalidInput, err),
+            _ => io::Error::new(io::ErrorKind::Other, err),
+        }
+    }
+
     #[allow(unknown_lints)]
     #[allow(mutex_atomic)]
     impl Process {
         pub fn new(cmd: &str, updated_paths: Vec<PathBuf>, no_shell: bool) -> Result<Process> {
             use nix::unistd::*;
-            use std::io;
             use std::os::unix::process::CommandExt;
 
             // Assemble command to run.
@@ -56,7 +64,8 @@ mod imp {
             }
 
             command
-                .before_exec(|| setpgid(0, 0).map_err(io::Error::from))
+                .before_exec(|| setpgid(Pid::from_raw(0), Pid::from_raw(0))
+                                    .map_err(from_nix_error))
                 .spawn()
                 .and_then(|p| {
                               Ok(Process {
@@ -69,10 +78,11 @@ mod imp {
 
         pub fn reap(&self) {
             use nix::sys::wait::*;
+            use nix::unistd::Pid;
 
             let mut finished = true;
             loop {
-                match waitpid(-self.pgid, Some(WNOHANG)) {
+                match waitpid(Pid::from_raw(-self.pgid), Some(WNOHANG)) {
                     Ok(WaitStatus::Exited(_, _)) |
                     Ok(WaitStatus::Signaled(_, _, _)) => finished = finished && true,
                     Ok(_) => {
diff --git a/src/signal.rs b/src/signal.rs
index ea1c99e..a26bb5a 100644
--- a/src/signal.rs
+++ b/src/signal.rs
@@ -23,7 +23,7 @@ pub enum Signal {
 }
 
 #[cfg(unix)]
-use libc::*;
+use nix::libc::*;
 
 #[cfg(unix)]
 pub trait ConvertToLibc {
@@ -75,7 +75,7 @@ pub fn install_handler<F>(handler: F)
     where F: Fn(self::Signal) + 'static + Send + Sync
 {
     use std::thread;
-    use libc::c_int;
+    use nix::libc::c_int;
     use nix::sys::signal::*;
 
     // Mask all signals interesting to us. The mask propagates