diff --git a/substrate/Cargo.lock b/substrate/Cargo.lock
index b93b32fd93..76d3d004c5 100644
--- a/substrate/Cargo.lock
+++ b/substrate/Cargo.lock
@@ -8269,7 +8269,7 @@ version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3bfd5b7557925ce778ff9b9ef90e3ade34c524b5ff10e239c69a42d546d2af56"
 dependencies = [
- "rand 0.7.3",
+ "rand 0.3.23",
 ]
 
 [[package]]
diff --git a/substrate/frame/evm/Cargo.toml b/substrate/frame/evm/Cargo.toml
index b45bf6e31e..50d7b03672 100644
--- a/substrate/frame/evm/Cargo.toml
+++ b/substrate/frame/evm/Cargo.toml
@@ -16,7 +16,7 @@ sp-core = { version = "2.0.0", default-features = false, path = "../../primitive
 sp-runtime = { version = "2.0.0", default-features = false, path = "../../primitives/runtime" }
 sp-std = { version = "2.0.0", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "2.0.0", default-features = false, path = "../../primitives/io" }
-primitive-types = { version = "0.6", default-features = false, features = ["rlp"] }
+primitive-types = { version = "0.6.2", default-features = false, features = ["rlp"] }
 rlp = { version = "0.4", default-features = false }
 evm = { version = "0.14", default-features = false }
 sha3 = { version = "0.8", default-features = false }
diff --git a/substrate/primitives/arithmetic/Cargo.toml b/substrate/primitives/arithmetic/Cargo.toml
index 1b6d36ca37..995e36d5c9 100644
--- a/substrate/primitives/arithmetic/Cargo.toml
+++ b/substrate/primitives/arithmetic/Cargo.toml
@@ -14,7 +14,7 @@ serde = { version = "1.0.101", optional = true, features = ["derive"] }
 sp-debug-derive = { version = "2.0.0", default-features = false, path = "../../primitives/debug-derive" }
 
 [dev-dependencies]
-primitive-types = "0.6.0"
+primitive-types = "0.6.2"
 rand = "0.7.2"
 criterion = "0.3"
 
diff --git a/substrate/primitives/arithmetic/fuzzer/Cargo.toml b/substrate/primitives/arithmetic/fuzzer/Cargo.toml
index 56e789f3e4..19d677f744 100644
--- a/substrate/primitives/arithmetic/fuzzer/Cargo.toml
+++ b/substrate/primitives/arithmetic/fuzzer/Cargo.toml
@@ -8,7 +8,7 @@ license = "GPL-3.0"
 [dependencies]
 sp-arithmetic = { version = "2.0.0", path = ".." }
 honggfuzz = "0.5"
-primitive-types = "0.6"
+primitive-types = "0.6.2"
 num-bigint = "0.2"
 num-traits = "0.2"
 
diff --git a/substrate/primitives/core/Cargo.toml b/substrate/primitives/core/Cargo.toml
index 6f1ce2f080..574b9aa9cb 100644
--- a/substrate/primitives/core/Cargo.toml
+++ b/substrate/primitives/core/Cargo.toml
@@ -12,7 +12,7 @@ rustc-hex = { version = "2.0.1", default-features = false }
 log = { version = "0.4.8", default-features = false }
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
 byteorder = { version = "1.3.2", default-features = false }
-primitive-types = { version = "0.6", default-features = false, features = ["codec"] }
+primitive-types = { version = "0.6.2", default-features = false, features = ["codec"] }
 impl-serde = { version = "0.2.3", optional = true }
 wasmi = { version = "0.6.2", optional = true }
 hash-db = { version = "0.15.2", default-features = false }
diff --git a/substrate/primitives/runtime-interface/Cargo.toml b/substrate/primitives/runtime-interface/Cargo.toml
index 3f20de1288..cef3acdbfb 100644
--- a/substrate/primitives/runtime-interface/Cargo.toml
+++ b/substrate/primitives/runtime-interface/Cargo.toml
@@ -12,7 +12,7 @@ sp-runtime-interface-proc-macro = { version = "2.0.0", path = "proc-macro" }
 sp-externalities = { version = "0.8.0", optional = true, path = "../externalities" }
 codec = { package = "parity-scale-codec", version = "1.0.6", default-features = false }
 static_assertions = "1.0.0"
-primitive-types = { version = "0.6.1", default-features = false }
+primitive-types = { version = "0.6.2", default-features = false }
 
 [dev-dependencies]
 sp-runtime-interface-test-wasm = { version = "2.0.0", path = "test-wasm" }