diff --git a/Cargo.lock b/Cargo.lock
index b207684..7b1b7af 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -560,7 +560,7 @@ dependencies = [
  "fnv 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "liner 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "peg-syntax-ext 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "peg-syntax-ext 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "permutate 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallstring 0.1.0",
  "smallvec 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1122,7 +1122,7 @@ dependencies = [
 
 [[package]]
 name = "peg"
-version = "0.4.0"
+version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1130,10 +1130,10 @@ dependencies = [
 
 [[package]]
 name = "peg-syntax-ext"
-version = "0.4.2"
+version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "peg 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "peg 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2279,8 +2279,8 @@ dependencies = [
 "checksum orbimage 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)" = "c3b031607ef7a3c562949dfb595b1ea2b2d697b14544af407242a52dce811a6f"
 "checksum orbtk 0.2.19 (registry+https://github.com/rust-lang/crates.io-index)" = "2bca50ac6874107a922dd26dc79889b963afce69075940463ce026b5281bf9f1"
 "checksum pager 0.1.0 (git+https://github.com/redox-os/libpager.git)" = "<none>"
-"checksum peg 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b2f7b0a8240dbf3d5cca65bba9791de310ce783d6e1426e56dc1278356b8017a"
-"checksum peg-syntax-ext 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "40f9e24d396d5d1857dbacd9b8a12c9e9922f40a52ab56bfdb681194fbdd6bdc"
+"checksum peg 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a85e13cbc4888df1091443e418a772c94163ab5a9cfcfe57d7fcf6ab1057b3c2"
+"checksum peg-syntax-ext 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "73c6541641bcf873455f1d208566ee3c85543de74f2a65a198109e86365501a8"
 "checksum permutate 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1b4ba980af238a6d6fcc0df53fe0d7920376bc4ce2c6ce298992891a230b47a8"
 "checksum phf 0.7.21 (registry+https://github.com/rust-lang/crates.io-index)" = "cb325642290f28ee14d8c6201159949a872f220c62af6e110a56ea914fbe42fc"
 "checksum phf_codegen 0.7.21 (registry+https://github.com/rust-lang/crates.io-index)" = "d62594c0bb54c464f633175d502038177e90309daf2e0158be42ed5f023ce88f"