diff --git a/Cargo.lock b/Cargo.lock
index d7fd8599b..1e51a3c93 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -580,7 +580,7 @@ dependencies = [
  "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -854,7 +854,7 @@ dependencies = [
  "hyper-native-tls 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1470,7 +1470,7 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand_core 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1499,7 +1499,7 @@ name = "rand_hc"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "rand_core 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1547,7 +1547,7 @@ name = "rand_xorshift"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "rand_core 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1649,7 +1649,7 @@ dependencies = [
  "mime_guess 2.0.0-alpha.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "native-tls 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_urlencoded 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-executor 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1795,7 +1795,7 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.37"
+version = "1.0.38"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "itoa 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1896,7 +1896,7 @@ dependencies = [
  "rocksdb 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana-bpfloader 0.12.0",
  "solana-drone 0.12.0",
  "solana-jsonrpc-core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1933,7 +1933,7 @@ version = "0.12.0"
 dependencies = [
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana 0.12.0",
  "solana-drone 0.12.0",
  "solana-logger 0.12.0",
@@ -2006,7 +2006,7 @@ version = "0.12.0"
 dependencies = [
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana 0.12.0",
  "solana-drone 0.12.0",
  "solana-fullnode-config 0.12.0",
@@ -2026,7 +2026,7 @@ dependencies = [
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana-netutil 0.12.0",
  "solana-sdk 0.12.0",
  "untrusted 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2037,7 +2037,7 @@ name = "solana-genesis"
 version = "0.12.0"
 dependencies = [
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana 0.12.0",
  "solana-sdk 0.12.0",
 ]
@@ -2051,7 +2051,7 @@ dependencies = [
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2132,7 +2132,7 @@ version = "0.12.0"
 dependencies = [
  "assert_cmd 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana 0.12.0",
  "solana-logger 0.12.0",
  "solana-sdk 0.12.0",
@@ -2210,7 +2210,7 @@ name = "solana-replicator"
 version = "0.12.0"
 dependencies = [
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana 0.12.0",
  "solana-fullnode-config 0.12.0",
  "solana-logger 0.12.0",
@@ -2230,7 +2230,7 @@ dependencies = [
  "ring 0.13.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "untrusted 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2261,7 +2261,7 @@ dependencies = [
 name = "solana-upload-perf"
 version = "0.12.0"
 dependencies = [
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana-metrics 0.12.0",
 ]
 
@@ -2285,7 +2285,7 @@ dependencies = [
  "bs58 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana-jsonrpc-core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana-jsonrpc-http-server 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana-jsonrpc-macros 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2302,7 +2302,7 @@ dependencies = [
  "chrono 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "dirs 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)",
  "solana 0.12.0",
  "solana-drone 0.12.0",
  "solana-logger 0.12.0",
@@ -3046,7 +3046,7 @@ dependencies = [
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 "checksum serde 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)" = "534b8b91a95e0f71bca3ed5824752d558da048d4248c91af873b63bd60519752"
 "checksum serde_derive 1.0.85 (registry+https://github.com/rust-lang/crates.io-index)" = "a915306b0f1ac5607797697148c223bedeaa36bcc2e28a01441cd638cc6567b4"
-"checksum serde_json 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)" = "4b90a9fbe1211e57d3e1c15670f1cb00802988fb23a1a4aad7a2b63544f1920e"
+"checksum serde_json 1.0.38 (registry+https://github.com/rust-lang/crates.io-index)" = "27dce848e7467aa0e2fcaf0a413641499c0b745452aaca1194d24dedde9e13c9"
 "checksum serde_urlencoded 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)" = "d48f9f99cd749a2de71d29da5f948de7f2764cc5a9d7f3c97e3514d4ee6eabf2"
 "checksum sha1 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2579985fda508104f7587689507983eadd6a6e84dd35d6d115361f530916fa0d"
 "checksum sha2 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9eb6be24e4c23a84d7184280d2722f7f2731fcdd4a9d886efbfe4413e4847ea0"
diff --git a/Cargo.toml b/Cargo.toml
index 48c2dfc8c..2f86c0904 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -44,7 +44,7 @@ ring = "0.13.2"
 rocksdb = "0.11.0"
 serde = "1.0.85"
 serde_derive = "1.0.85"
-serde_json = "1.0.37"
+serde_json = "1.0.38"
 solana-bpfloader = { path = "programs/native/bpf_loader", version = "0.12.0" }
 solana-drone = { path = "drone", version = "0.12.0" }
 solana-jsonrpc-core = "0.4.0"
diff --git a/bench-tps/Cargo.toml b/bench-tps/Cargo.toml
index 0bb873484..1fd8a234d 100644
--- a/bench-tps/Cargo.toml
+++ b/bench-tps/Cargo.toml
@@ -10,7 +10,7 @@ homepage = "https://solana.com/"
 [dependencies]
 clap = "2.32.0"
 rayon = "1.0.3"
-serde_json = "1.0.37"
+serde_json = "1.0.38"
 solana = { path = "..", version = "0.12.0" }
 solana-drone = { path = "../drone", version = "0.12.0" }
 solana-logger = { path = "../logger", version = "0.12.0" }
diff --git a/fullnode-config/Cargo.toml b/fullnode-config/Cargo.toml
index 5e995759d..4b769c2d2 100644
--- a/fullnode-config/Cargo.toml
+++ b/fullnode-config/Cargo.toml
@@ -14,7 +14,7 @@ dirs = "1.0.2"
 log = "0.4.2"
 serde = "1.0.85"
 serde_derive = "1.0.85"
-serde_json = "1.0.37"
+serde_json = "1.0.38"
 solana-netutil = { path = "../netutil", version = "0.12.0" }
 solana-sdk = { path = "../sdk", version = "0.12.0" }
 untrusted = "0.6.2"
diff --git a/fullnode/Cargo.toml b/fullnode/Cargo.toml
index abc2431ec..f470a6cf2 100644
--- a/fullnode/Cargo.toml
+++ b/fullnode/Cargo.toml
@@ -11,7 +11,7 @@ homepage = "https://solana.com/"
 [dependencies]
 clap = "2.32.0"
 log = "0.4.2"
-serde_json = "1.0.37"
+serde_json = "1.0.38"
 solana = { path = "..", version = "0.12.0" }
 solana-drone = { path = "../drone", version = "0.12.0" }
 solana-fullnode-config = { path = "../fullnode-config", version = "0.12.0" }
diff --git a/genesis/Cargo.toml b/genesis/Cargo.toml
index 23a429878..fa5db072f 100644
--- a/genesis/Cargo.toml
+++ b/genesis/Cargo.toml
@@ -10,7 +10,7 @@ homepage = "https://solana.com/"
 
 [dependencies]
 clap = "2.32.0"
-serde_json = "1.0.37"
+serde_json = "1.0.38"
 solana = { path = "..", version = "0.12.0" }
 solana-sdk = { path = "../sdk", version = "0.12.0" }
 
diff --git a/ledger-tool/Cargo.toml b/ledger-tool/Cargo.toml
index 630cc710e..c82538021 100644
--- a/ledger-tool/Cargo.toml
+++ b/ledger-tool/Cargo.toml
@@ -10,7 +10,7 @@ homepage = "https://solana.com/"
 
 [dependencies]
 clap = "2.32.0"
-serde_json = "1.0.37"
+serde_json = "1.0.38"
 solana = { path = "..", version = "0.12.0" }
 solana-sdk = { path = "../sdk", version = "0.12.0" }
 solana-logger = { path = "../logger", version = "0.12.0" }
diff --git a/replicator/Cargo.toml b/replicator/Cargo.toml
index 2a09ccb5c..5d3b8cb04 100644
--- a/replicator/Cargo.toml
+++ b/replicator/Cargo.toml
@@ -9,7 +9,7 @@ homepage = "https://solana.com/"
 
 [dependencies]
 clap = "2.32.0"
-serde_json = "1.0.37"
+serde_json = "1.0.38"
 solana = { path = "..", version = "0.12.0" }
 solana-logger = { path = "../logger", version = "0.12.0" }
 solana-fullnode-config = { path = "../fullnode-config", version = "0.12.0" }
diff --git a/sdk/Cargo.toml b/sdk/Cargo.toml
index 42d990141..6b4f7b262 100644
--- a/sdk/Cargo.toml
+++ b/sdk/Cargo.toml
@@ -19,5 +19,5 @@ ring = "0.13.2"
 sha2 = "0.8.0"
 serde = "1.0.85"
 serde_derive = "1.0.85"
-serde_json = "1.0.37"
+serde_json = "1.0.38"
 untrusted = "0.6.2"
diff --git a/upload-perf/Cargo.toml b/upload-perf/Cargo.toml
index 73b79270f..4dfb1cee6 100644
--- a/upload-perf/Cargo.toml
+++ b/upload-perf/Cargo.toml
@@ -9,7 +9,7 @@ edition = "2018"
 homepage = "https://solana.com/"
 
 [dependencies]
-serde_json = "1.0.37"
+serde_json = "1.0.38"
 solana-metrics = { path = "../metrics", version = "0.12.0" }
 
 [[bin]]
diff --git a/vote-signer/Cargo.toml b/vote-signer/Cargo.toml
index 53017f72c..93e11bbb6 100644
--- a/vote-signer/Cargo.toml
+++ b/vote-signer/Cargo.toml
@@ -11,7 +11,7 @@ homepage = "https://solana.com/"
 bs58 = "0.2.0"
 clap = "2.31"
 log = "0.4.2"
-serde_json = "1.0.37"
+serde_json = "1.0.38"
 solana-sdk = { path = "../sdk", version = "0.12.0" }
 solana-metrics = { path = "../metrics", version = "0.12.0" }
 solana-jsonrpc-core = "0.4.0"
diff --git a/wallet/Cargo.toml b/wallet/Cargo.toml
index 8fa0c5d84..6ebb7a6a8 100644
--- a/wallet/Cargo.toml
+++ b/wallet/Cargo.toml
@@ -14,7 +14,7 @@ bs58 = "0.2.0"
 clap = "2.32.0"
 chrono = { version = "0.4.0", features = ["serde"] }
 dirs = "1.0.2"
-serde_json = "1.0.37"
+serde_json = "1.0.38"
 solana = { path = "..", version = "0.12.0" }
 solana-drone = { path = "../drone", version = "0.12.0" }
 solana-logger = { path = "../logger", version = "0.12.0" }