diff --git a/api/Cargo.toml b/api/Cargo.toml
index bf9f1de19..032f3a364 100644
--- a/api/Cargo.toml
+++ b/api/Cargo.toml
@@ -13,7 +13,7 @@ grin_util = { path = "../util" }
 grin_p2p = { path = "../p2p" }
 hyper = "~0.10.6"
 slog = { version = "^2.0.12", features = ["max_level_trace", "release_max_level_trace"] }
-lazy_static = "1.0"
+lazy_static = "~0.2.8"
 iron = "~0.5.1"
 router = "~0.5.1"
 regex = "^0.2"
@@ -21,4 +21,4 @@ mount = "~0.3.0"
 urlencoded = "~0.5.0"
 serde = "~1.0.8"
 serde_derive = "~1.0.8"
-serde_json = "~1.0.7"
+serde_json = "~1.0.9"
diff --git a/core/Cargo.toml b/core/Cargo.toml
index 1f20e18fe..7f84ee27d 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -7,7 +7,7 @@ workspace = ".."
 [dependencies]
 bitflags = "^1.0"
 blake2-rfc = "~0.2.17"
-byteorder = "^0.5"
+byteorder = "^1.0"
 slog = { version = "^2.0.12", features = ["max_level_trace", "release_max_level_trace"] }
 num-bigint = "^0.1.35"
 rand = "^0.3"
diff --git a/grin/Cargo.toml b/grin/Cargo.toml
index 36877e21f..7372f8bb4 100644
--- a/grin/Cargo.toml
+++ b/grin/Cargo.toml
@@ -21,7 +21,7 @@ slog = { version = "^2.0.12", features = ["max_level_trace", "release_max_level_
 time = "^0.1"
 serde = "~1.0.8"
 serde_derive = "~1.0.8"
-serde_json = "~1.0.7"
+serde_json = "~1.0.8"
 rand = "^0.3"
 router = "~0.5.1"
 itertools = "~0.6.0"
diff --git a/keychain/Cargo.toml b/keychain/Cargo.toml
index 240ce140f..65af4b1c7 100644
--- a/keychain/Cargo.toml
+++ b/keychain/Cargo.toml
@@ -4,11 +4,11 @@ version = "0.1.0"
 authors = ["Antioch Peverell"]
 
 [dependencies]
-byteorder = "~1"
+byteorder = "^1.0"
 blake2-rfc = "~0.2.17"
-rand = "~0.3"
+rand = "^0.3"
 slog = { version = "^2.0.12", features = ["max_level_trace", "release_max_level_trace"] }
 serde = "~1.0.8"
 serde_derive = "~1.0.8"
-serde_json = "~1.0.7"
+serde_json = "~1.0.8"
 grin_util = { path = "../util" }
diff --git a/p2p/Cargo.toml b/p2p/Cargo.toml
index f6d374ce2..3a3254b70 100644
--- a/p2p/Cargo.toml
+++ b/p2p/Cargo.toml
@@ -6,7 +6,6 @@ workspace = ".."
 
 [dependencies]
 bitflags = "^1.0"
-byteorder = "^0.5"
 slog = { version = "^2.0.12", features = ["max_level_trace", "release_max_level_trace"] }
 net2 = "0.2.0"
 rand = "^0.3"
diff --git a/pool/Cargo.toml b/pool/Cargo.toml
index 7a66c5ae6..4ee39289a 100644
--- a/pool/Cargo.toml
+++ b/pool/Cargo.toml
@@ -7,11 +7,9 @@ authors = ["Grin Authors <mimblewimble@lists.launchpad.net>"]
 blake2-rfc = "~0.2.17"
 grin_core = { path = "../core" }
 grin_keychain = { path = "../keychain" }
-grin_store = { path = "../store" }
-grin_p2p = { path = "../p2p" }
 grin_util = { path = "../util" }
 serde = "~1.0.8"
 serde_derive = "~1.0.8"
 slog = { version = "^2.0.12", features = ["max_level_trace", "release_max_level_trace"] }
 time = "^0.1"
-rand = "0.3"
+rand = "^0.3"
diff --git a/pow/Cargo.toml b/pow/Cargo.toml
index 000e80f70..38e74f36d 100644
--- a/pow/Cargo.toml
+++ b/pow/Cargo.toml
@@ -24,6 +24,3 @@ tag = "grin_integration_21"
 #features=["no-plugin-build"]
 #uncomment this feature to enable cuda builds (cuda toolkit must be installed)
 #features=["build-cuda-plugins"]
-
-[dev_dependencies]
-grin_chain = { path = "../chain"}
diff --git a/store/Cargo.toml b/store/Cargo.toml
index 71a3d1de3..af1151ef9 100644
--- a/store/Cargo.toml
+++ b/store/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Ignotus Peverell <igno.peverell@protonmail.com>"]
 workspace = ".."
 
 [dependencies]
-byteorder = "^0.5"
+byteorder = "^1.0"
 env_logger="^0.3.5"
 slog = { version = "^2.0.12", features = ["max_level_trace", "release_max_level_trace"] }
 libc = "^0.2"
diff --git a/util/Cargo.toml b/util/Cargo.toml
index c71ef7b7b..a45b65ebd 100644
--- a/util/Cargo.toml
+++ b/util/Cargo.toml
@@ -10,10 +10,9 @@ slog = { version = "^2.0.12", features = ["max_level_trace", "release_max_level_
 slog-term = "^2.2.0"
 slog-async = "^2.1.0"
 lazy_static = "~0.2.8"
-byteorder = "^0.5"
-rand = "0.3"
+byteorder = "^1.0"
+rand = "^0.3"
 serde = "~1.0.8"
 serde_derive = "~1.0.8"
 secp256k1zkp = { git = "https://github.com/mimblewimble/rust-secp256k1-zkp", tag="grin_integration_7" }
 #secp256k1zkp = { path = "../../rust-secp256k1-zkp" }
-
diff --git a/wallet/Cargo.toml b/wallet/Cargo.toml
index eda4a92a7..7cb5c0667 100644
--- a/wallet/Cargo.toml
+++ b/wallet/Cargo.toml
@@ -9,13 +9,13 @@ authors = [
 
 [dependencies]
 
-byteorder = "1"
+byteorder = "^1.0"
 slog = { version = "^2.0.12", features = ["max_level_trace", "release_max_level_trace"] }
 rand = "^0.3"
 blake2-rfc = "~0.2.17"
 serde = "~1.0.8"
 serde_derive = "~1.0.8"
-serde_json = "~1.0.7"
+serde_json = "~1.0.8"
 bodyparser = "~0.7.0"
 futures = "^0.1.15"
 iron = "~0.5.1"