diff --git a/Cargo.lock b/Cargo.lock
index 28167bb..b326960 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -41,7 +41,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "backtrace"
-version = "0.3.17"
+version = "0.3.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -173,7 +173,7 @@ name = "failure"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "backtrace 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "backtrace 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure_derive 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1014,7 +1014,7 @@ dependencies = [
 "checksum arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "92c7fb76bc8826a8b33b4ee5bb07a247a81e76764ab4d55e8f73e3a4d8808c71"
 "checksum atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "9a7d5b8723950951411ee34d271d99dddcc2035a16ab25310ea2c8cfd4369652"
 "checksum autocfg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a6d640bee2da49f60a4068a7fae53acde8982514ab7bae8b8cea9e88cbcfd799"
-"checksum backtrace 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)" = "70af6de4789ac39587f100176ac7f704531e9e534b0f8676f658b3d909ce9a94"
+"checksum backtrace 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)" = "f92d5d536fa03dc3d93711d97bac1fae2eb59aba467ca4c6600c0119da614f51"
 "checksum backtrace-sys 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)" = "797c830ac25ccc92a7f8a7b9862bde440715531514594a6154e3d4a54dd769b6"
 "checksum bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12"
 "checksum byteorder 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a019b10a2a7cdeb292db131fc8113e57ea2a908f6e7894b0c3c671893b65dbeb"
diff --git a/Cargo.toml b/Cargo.toml
index ceef78f..e1f0132 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,13 +16,13 @@ categories     = ["database"]
 
 
 [dependencies]
-log            = "*"
-env_logger     = "*"
-futures        = "*"
-clap           = "*"
-serde_json     = "*"
-serde          = "*"
-serde_derive   = "*"
-failure        = "*"
-hyper          = "*"
-http           = "*"
+log            = "0.4.6"
+env_logger     = "0.6.1"
+futures        = "0.1.27"
+clap           = "2.33.0"
+serde_json     = "1.0.39"
+serde          = "1.0.91"
+serde_derive   = "1.0.91"
+failure        = "0.1.5"
+hyper          = "0.12.29"
+http           = "0.1.17"