diff --git a/Cargo.lock b/Cargo.lock
index acdb241ac..16b41d0e8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -15,7 +15,6 @@ dependencies = [
  "fdlimit 0.1.0",
  "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "target_info 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -204,12 +203,10 @@ dependencies = [
  "jsonrpc-core 1.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-http-server 1.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc_version 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.6.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_codegen 0.6.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "syntex 0.29.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "target_info 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 3cb158df7..7fdfc2bee 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,7 +17,6 @@ ethcore = { path = "ethcore" }
 ethsync = { path = "sync" }
 ethcore-rpc = { path = "rpc", optional = true }
 fdlimit = { path = "util/fdlimit" }
-target_info = "0.1"
 daemonize = "0.2"
 ethcore-devtools = { path = "devtools" }
 
diff --git a/rpc/Cargo.toml b/rpc/Cargo.toml
index bce5b609c..be06316a4 100644
--- a/rpc/Cargo.toml
+++ b/rpc/Cargo.toml
@@ -17,10 +17,8 @@ ethcore-util = { path = "../util" }
 ethcore = { path = "../ethcore" }
 ethsync = { path = "../sync" }
 clippy = { version = "0.0.42", optional = true }
-target_info = "0.1.0"
 rustc-serialize = "0.3"
 serde_macros = { version = "0.6.13", optional = true }
-rustc_version = "0.1.0"
 
 [build-dependencies]
 serde_codegen = { version = "0.6.13", optional = true }