diff --git a/Cargo.toml b/Cargo.toml
index ab430925..de76b9da 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,6 +16,9 @@ derive_more = "0.99.17"
 hex = "0.4.3"
 indexmap = { version = "1.9.2", features = ["serde"] }
 once_cell = "1.17.1"
+# TODO: Remove the explicit version once the following issue is resolved: https://github.com/paritytech/parity-scale-codec/issues/520
+parity-scale-codec = "=3.6.5"
+parity-scale-codec-derive = "=3.6.5"
 primitive-types = { version = "0.12.1", features = ["serde"] }
 serde = { version = "1.0.130", features = ["derive", "rc"] }
 serde_json = "1.0.81"