diff --git a/Cargo.lock b/Cargo.lock
index 2e30793e47b7b..d77ba65cbde22 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1412,7 +1412,7 @@ dependencies = [
 
 [[package]]
 name = "impl-serde"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3034,7 +3034,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "fixed-hash 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "impl-codec 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "impl-serde 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "impl-serde 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "uint 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -3957,7 +3957,7 @@ dependencies = [
 name = "sr-version"
 version = "2.0.0"
 dependencies = [
- "impl-serde 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "impl-serde 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "parity-scale-codec 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-primitives 2.0.0",
@@ -5386,7 +5386,7 @@ dependencies = [
  "hash256-std-hasher 0.15.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex-literal 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "impl-serde 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "impl-serde 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -5415,7 +5415,7 @@ dependencies = [
 name = "substrate-primitives-storage"
 version = "2.0.0"
 dependencies = [
- "impl-serde 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "impl-serde 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
  "sr-std 2.0.0",
 ]
@@ -6941,7 +6941,7 @@ dependencies = [
 "checksum idna 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "38f09e0f0b1fb55fdee1f17470ad800da77af5186a1a76c026b679358b7e844e"
 "checksum idna 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "02e2673c30ee86b5b96a9cb52ad15718aa1f966f5ab9ad54a8b95d5ca33120a9"
 "checksum impl-codec 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3fa0086251524c50fd53b32e7b05eb6d79e2f97221eaf0c53c0ca9c3096f21d3"
-"checksum impl-serde 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bbb1ea6188aca47a0eaeeb330d8a82f16cd500f30b897062d23922568727333a"
+"checksum impl-serde 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a263dc95daa6c3788c8f7133d86dc2ad89ec5a0c56167f9e3441c5f7f33358c4"
 "checksum impl-trait-for-tuples 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6947b372790f8948f439bb6aaa6baabdf80be1a207a477ff072f83fb793e428f"
 "checksum indexmap 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a61202fbe46c4a951e9404a720a0180bcf3212c750d735cb5c4ba4dc551299f3"
 "checksum integer-sqrt 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ea155abb3ba6f382a75f1418988c05fe82959ed9ce727de427f9cfd425b0c903"
diff --git a/core/rpc/src/state/tests.rs b/core/rpc/src/state/tests.rs
index 3790b3ea11657..5dfa234337afa 100644
--- a/core/rpc/src/state/tests.rs
+++ b/core/rpc/src/state/tests.rs
@@ -313,3 +313,11 @@ fn should_notify_on_runtime_version_initially() {
 		// no more notifications on this channel
 	assert_eq!(core.block_on(next.into_future()).unwrap().0, None);
 }
+
+#[test]
+fn should_deserialize_storage_key() {
+	let k = "\"0x7f864e18e3dd8b58386310d2fe0919eef27c6e558564b7f67f22d99d20f587b\"";
+	let k: StorageKey = serde_json::from_str(k).unwrap();
+
+	assert_eq!(k.0.len(), 32);
+}