diff --git a/Cargo.lock b/Cargo.lock
index 75f37ece1..1d0321746 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -306,25 +306,15 @@ dependencies = [
 
 [[package]]
 name = "cpp_build"
-version = "0.3.2"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cpp_common 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cc 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cpp_common 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cpp_syn 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cpp_synmap 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cpp_synom 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "gcc 0.3.54 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "cpp_common"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cpp_syn 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cpp_synom 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -579,11 +569,6 @@ name = "fuchsia-zircon-sys"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "gcc"
-version = "0.3.54"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "generic-array"
 version = "0.8.3"
@@ -741,11 +726,6 @@ dependencies = [
  "uucore 0.0.1",
 ]
 
-[[package]]
-name = "lazy_static"
-version = "0.2.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "lazy_static"
 version = "1.0.1"
@@ -766,7 +746,7 @@ name = "libstdbuf"
 version = "0.0.1"
 dependencies = [
  "cpp 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cpp_build 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cpp_build 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "uucore 0.0.1",
 ]
@@ -2071,8 +2051,7 @@ dependencies = [
 "checksum clippy_lints 0.0.211 (registry+https://github.com/rust-lang/crates.io-index)" = "af5c9410d051eeb63e8f9535271477677df56b05b4ed6be8c7c14a9646a413db"
 "checksum cmake 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)" = "56d741ea7a69e577f6d06b36b7dff4738f680593dc27a701ffa8506b73ce28bb"
 "checksum cpp 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2d1cd8699ffa1b18fd388183f7762e0545eddbd5c6ec95e9e3b42a4a71a507ff"
-"checksum cpp_build 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e9aebc7c97550a8c6a1f48dbaf078b033dc546e1b5badde300767099d4cace8f"
-"checksum cpp_common 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4ca58053cb5433ac7d3852eeee6a58314762bdbcbcd765a8f9a4f0e66bf90c72"
+"checksum cpp_build 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c47531e7e09532ad4827098729794f5e1a5b1c2ccbb5e295498d2e7ab451c445"
 "checksum cpp_common 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "79e39149a7943affa02f5b6e347ca2840a129cc78d5883ee229f0f1c4027d628"
 "checksum cpp_macros 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6bba562eb4d65561efb6cef4e5f0de5936edfee7c6af7a4dfc323f6f2c997e40"
 "checksum cpp_syn 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a8cd649bf5b3804d92fe12a60c7698f5a538a6033ed8a668bf5241d4d4f1644e"
@@ -2091,7 +2070,6 @@ dependencies = [
 "checksum fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "2fad85553e09a6f881f739c29f0b00b0f01357c743266d478b68951ce23285f3"
 "checksum fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
 "checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
-"checksum gcc 0.3.54 (registry+https://github.com/rust-lang/crates.io-index)" = "5e33ec290da0d127825013597dbdfc28bee4964690c7ce1166cbc2a7bd08b1bb"
 "checksum generic-array 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)" = "fceb69994e330afed50c93524be68c42fa898c2d9fd4ee8da03bd7363acd26f2"
 "checksum getopts 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)" = "0a7292d30132fb5424b354f5dc02512a86e4c516fe544bb7a25e7f266951b797"
 "checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
@@ -2103,7 +2081,6 @@ dependencies = [
 "checksum itertools 0.7.8 (registry+https://github.com/rust-lang/crates.io-index)" = "f58856976b776fedd95533137617a02fb25719f40e7d9b01c7043cd65474f450"
 "checksum itoa 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8324a32baf01e2ae060e9de58ed0bc2320c9a2833491ee36cd3b4c414de4db8c"
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
-"checksum lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "76f033c7ad61445c5b347c7382dd1237847eb1bce590fe50365dcb33d546be73"
 "checksum lazy_static 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e6412c5e2ad9584b0b8e979393122026cdd6d2a80b933f890dcd694ddbe73739"
 "checksum lazycell 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3b585b7a6811fb03aa10e74b278a0f00f8dd9b45dc681f148bb29fa5cb61859b"
 "checksum libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)" = "b685088df2b950fccadf07a7187c8ef846a959c142338a48f9dc0b94517eb5f1"
diff --git a/src/stdbuf/libstdbuf/Cargo.toml b/src/stdbuf/libstdbuf/Cargo.toml
index 31f59ba92..d315e50cf 100644
--- a/src/stdbuf/libstdbuf/Cargo.toml
+++ b/src/stdbuf/libstdbuf/Cargo.toml
@@ -15,4 +15,4 @@ libc = "0.2"
 cpp = "0.4"
 
 [build-dependencies]
-cpp_build = "0.3"
+cpp_build = "0.4"