diff --git a/Cargo.lock b/Cargo.lock
index fc63b9d80bdf2..80e19d750d2cc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2659,9 +2659,18 @@ dependencies = [
 
 [[package]]
 name = "impl-serde"
-version = "0.3.1"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4551f042f3438e64dbd6226b20527fc84a6e1fe65688b58746a2f53623f25f5c"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "impl-serde"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b47ca4d2b6931707a55fce5cf66aff80e2178c8b63bbb4ecb5695cbc870ddf6f"
+checksum = "ebc88fc67028ae3db0c853baa36269d398d5f45b6982f95549ff5def78c935cd"
 dependencies = [
  "serde",
 ]
@@ -6169,7 +6178,7 @@ checksum = "2415937401cb030a2a0a4d922483f945fa068f52a7dbb22ce0fe5f2b6f6adace"
 dependencies = [
  "fixed-hash",
  "impl-codec",
- "impl-serde",
+ "impl-serde 0.3.2",
  "uint",
 ]
 
@@ -8766,7 +8775,7 @@ dependencies = [
  "hash256-std-hasher",
  "hex",
  "hex-literal",
- "impl-serde",
+ "impl-serde 0.4.0",
  "lazy_static",
  "libsecp256k1",
  "log",
@@ -9145,7 +9154,7 @@ version = "3.0.0"
 name = "sp-storage"
 version = "3.0.0"
 dependencies = [
- "impl-serde",
+ "impl-serde 0.4.0",
  "parity-scale-codec 2.0.1",
  "ref-cast",
  "serde",
@@ -9250,7 +9259,7 @@ dependencies = [
 name = "sp-version"
 version = "3.0.0"
 dependencies = [
- "impl-serde",
+ "impl-serde 0.4.0",
  "parity-scale-codec 2.0.1",
  "serde",
  "sp-runtime",
diff --git a/primitives/core/Cargo.toml b/primitives/core/Cargo.toml
index 3d9cf1287e051..a76e36e0a5ae3 100644
--- a/primitives/core/Cargo.toml
+++ b/primitives/core/Cargo.toml
@@ -19,7 +19,7 @@ log = { version = "0.4.11", default-features = false }
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
 byteorder = { version = "1.3.2", default-features = false }
 primitive-types = { version = "0.9.0", default-features = false, features = ["codec"] }
-impl-serde = { version = "0.3.0", optional = true }
+impl-serde = { version = "0.4.0", optional = true }
 wasmi = { version = "0.6.2", optional = true }
 hash-db = { version = "0.15.2", default-features = false }
 hash256-std-hasher = { version = "0.15.2", default-features = false }
diff --git a/primitives/storage/Cargo.toml b/primitives/storage/Cargo.toml
index 7a984d9205690..ea5bdd4fe4489 100644
--- a/primitives/storage/Cargo.toml
+++ b/primitives/storage/Cargo.toml
@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 sp-std = { version = "3.0.0", default-features = false, path = "../std" }
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
-impl-serde = { version = "0.3.1", optional = true }
+impl-serde = { version = "0.4.0", optional = true }
 ref-cast = "1.0.0"
 sp-debug-derive = { version = "3.0.0", path = "../debug-derive" }
 codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
diff --git a/primitives/version/Cargo.toml b/primitives/version/Cargo.toml
index bfb9a742c8689..4a8244ea10abe 100644
--- a/primitives/version/Cargo.toml
+++ b/primitives/version/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 
 [dependencies]
-impl-serde = { version = "0.3.1", optional = true }
+impl-serde = { version = "0.4.0", optional = true }
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
 codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
 sp-std = { version = "3.0.0", default-features = false, path = "../std" }