diff --git a/Cargo.lock b/Cargo.lock
index a916a10cf6d..e3501d028fe 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 4
+version = 3
 
 [[package]]
 name = "addr2line"
@@ -470,9 +470,9 @@ dependencies = [
 
 [[package]]
 name = "bumpalo"
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+version = "3.17.0"
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-checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
+checksum = "1628fb46dfa0b37568d12e5edd512553eccf6a22a78e8bde00bb4aed84d5bdbf"
 
 [[package]]
 name = "byte-slice-cast"
@@ -1535,9 +1535,9 @@ checksum = "56254986775e3233ffa9c4d7d3faaf6d36a2c09d30b20687e9f88bc8bafc16c8"
 
 [[package]]
 name = "diffy"
-version = "0.4.0"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d3041965b7a63e70447ec818a46b1e5297f7fcae3058356d226c02750c4e6cb"
+checksum = "b545b8c50194bdd008283985ab0b31dba153cfd5b3066a92770634fbc0d7d291"
 dependencies = [
  "nu-ansi-term 0.50.1",
 ]
@@ -2855,30 +2855,28 @@ checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"
 
 [[package]]
 name = "parity-scale-codec"
-version = "3.7.2"
+version = "3.6.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b91c2d9a6a6004e205b7e881856fb1a0f5022d382acc2c01b52185f7b6f65997"
+checksum = "306800abfa29c7f16596b5970a588435e3d5b3149683d00c12b699cc19f895ee"
 dependencies = [
  "arrayvec",
  "bitvec",
  "byte-slice-cast",
- "const_format",
  "impl-trait-for-tuples",
  "parity-scale-codec-derive",
- "rustversion",
  "serde",
 ]
 
 [[package]]
 name = "parity-scale-codec-derive"
-version = "3.7.2"
+version = "3.6.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77555fd9d578b6470470463fded832619a5fec5ad6cbc551fe4d7507ce50cd3a"
+checksum = "d830939c76d294956402033aee57a6da7b438f2294eb94864c37b0569053a42c"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.96",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -3954,13 +3952,13 @@ checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
 
 [[package]]
 name = "tempfile"
-version = "3.15.0"
+version = "3.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a8a559c81686f576e8cd0290cd2a24a2a9ad80c98b3478856500fcbd7acd704"
+checksum = "38c246215d7d24f48ae091a2902398798e05d978b24315d6efbc00ede9a8bb91"
 dependencies = [
  "cfg-if",
  "fastrand",
- "getrandom 0.2.15",
+ "getrandom 0.3.1",
  "once_cell",
  "rustix",
  "windows-sys 0.59.0",
diff --git a/Cargo.toml b/Cargo.toml
index 326b7526db8..cb2fd983a94 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -111,7 +111,7 @@ log = "0.4.25"
 num-bigint = { version = "0.4.6", default-features = false }
 num-integer = "0.1.46"
 num-traits = { version = "0.2.19", default-features = false }
-parity-scale-codec = { version = "3.7.2", default-features = false, features = [
+parity-scale-codec = { version = "3.6.12", default-features = false, features = [
     "derive",
 ] }
 path-clean = "1.0.1"