diff --git a/amm/contracts/factory/Cargo.toml b/amm/contracts/factory/Cargo.toml
index 69265bbc..07827346 100644
--- a/amm/contracts/factory/Cargo.toml
+++ b/amm/contracts/factory/Cargo.toml
@@ -7,10 +7,10 @@ edition = "2021"
 [dependencies]
 ink = { version = "=4.3.0", default-features = false }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = [
+scale = { package = "parity-scale-codec", version = "=3.6.9", default-features = false, features = [
     "derive",
 ] }
-scale-info = { version = "2.9", default-features = false, features = [
+scale-info = { version = "=2.10.0", default-features = false, features = [
     "derive",
 ], optional = true }
 
diff --git a/amm/contracts/pair/Cargo.toml b/amm/contracts/pair/Cargo.toml
index 7edb65fc..c3503458 100644
--- a/amm/contracts/pair/Cargo.toml
+++ b/amm/contracts/pair/Cargo.toml
@@ -7,10 +7,10 @@ edition = "2021"
 [dependencies]
 ink = { version = "=4.3.0", default-features = false }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = [
+scale = { package = "parity-scale-codec", version = "=3.6.9", default-features = false, features = [
     "derive",
 ] }
-scale-info = { version = "2.9", default-features = false, features = [
+scale-info = { version = "=2.10.0", default-features = false, features = [
     "derive",
 ], optional = true }
 
diff --git a/amm/contracts/router/Cargo.toml b/amm/contracts/router/Cargo.toml
index 522072bc..c4983269 100755
--- a/amm/contracts/router/Cargo.toml
+++ b/amm/contracts/router/Cargo.toml
@@ -7,10 +7,10 @@ edition = "2021"
 [dependencies]
 ink = { version = "=4.3.0", default-features = false }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = [
+scale = { package = "parity-scale-codec", version = "=3.6.9", default-features = false, features = [
     "derive",
 ] }
-scale-info = { version = "2.9", default-features = false, features = [
+scale-info = { version = "=2.10.0", default-features = false, features = [
     "derive",
 ], optional = true }
 
diff --git a/amm/contracts/router_v2/Cargo.toml b/amm/contracts/router_v2/Cargo.toml
index 8510ffb0..81457da2 100755
--- a/amm/contracts/router_v2/Cargo.toml
+++ b/amm/contracts/router_v2/Cargo.toml
@@ -7,10 +7,10 @@ edition = "2021"
 [dependencies]
 ink = { version = "=4.3.0", default-features = false }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = [
+scale = { package = "parity-scale-codec", version = "=3.6.9", default-features = false, features = [
     "derive",
 ] }
-scale-info = { version = "2.9", default-features = false, features = [
+scale-info = { version = "=2.10.0", default-features = false, features = [
     "derive",
 ], optional = true }
 
diff --git a/amm/contracts/stable_pool/Cargo.toml b/amm/contracts/stable_pool/Cargo.toml
index ca8545d5..8aad4a7b 100644
--- a/amm/contracts/stable_pool/Cargo.toml
+++ b/amm/contracts/stable_pool/Cargo.toml
@@ -7,10 +7,10 @@ edition = "2021"
 [dependencies]
 ink = { version = "=4.3.0", default-features = false }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = [
+scale = { package = "parity-scale-codec", version = "=3.6.9", default-features = false, features = [
     "derive",
 ] }
-scale-info = { version = "2.9", default-features = false, features = [
+scale-info = { version = "=2.10.0", default-features = false, features = [
     "derive",
 ], optional = true }
 
diff --git a/amm/drink-tests/Cargo.toml b/amm/drink-tests/Cargo.toml
index e0ea2e8e..9b5a6cd4 100644
--- a/amm/drink-tests/Cargo.toml
+++ b/amm/drink-tests/Cargo.toml
@@ -12,7 +12,7 @@ ink-wrapper-types = { version = "0.9.0", default-features = false, features = [
 ] }
 
 ink_primitives = "4.3.0"
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = [
+scale = { package = "parity-scale-codec", version = "=3.6.9", default-features = false, features = [
     "derive",
 ] }
 
diff --git a/amm/traits/Cargo.toml b/amm/traits/Cargo.toml
index 2dff33a7..e3e50cb0 100644
--- a/amm/traits/Cargo.toml
+++ b/amm/traits/Cargo.toml
@@ -8,10 +8,10 @@ edition = "2021"
 ink = { version = "=4.3.0", default-features = false }
 ink_metadata = { version = "=4.3.0", features = ["derive"], optional = true }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = [
+scale = { package = "parity-scale-codec", version = "=3.6.9", default-features = false, features = [
     "derive",
 ] }
-scale-info = { version = "2.9", default-features = false, features = [
+scale-info = { version = "=2.10.0", default-features = false, features = [
     "derive",
 ], optional = true }
 
diff --git a/farm/contract/Cargo.toml b/farm/contract/Cargo.toml
index 31bc1bf1..d9aded68 100644
--- a/farm/contract/Cargo.toml
+++ b/farm/contract/Cargo.toml
@@ -7,10 +7,10 @@ edition = "2021"
 [dependencies]
 ink = { version = "=4.3.0", default-features = false }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = [
+scale = { package = "parity-scale-codec", version = "=3.6.9", default-features = false, features = [
     "derive",
 ] }
-scale-info = { version = "2.3", default-features = false, features = [
+scale-info = { version = "=2.10.0", default-features = false, features = [
     "derive",
 ], optional = true }
 
diff --git a/farm/trait/Cargo.toml b/farm/trait/Cargo.toml
index 812e674c..8c1e4679 100644
--- a/farm/trait/Cargo.toml
+++ b/farm/trait/Cargo.toml
@@ -7,10 +7,10 @@ edition = "2021"
 [dependencies]
 ink = { version = "=4.3.0", default-features = false }
 
-scale = { package = "parity-scale-codec", version = "3", default-features = false, features = [
+scale = { package = "parity-scale-codec", version = "=3.6.9", default-features = false, features = [
     "derive",
 ] }
-scale-info = { version = "2.5", default-features = false, features = [
+scale-info = { version = "=2.10.0", default-features = false, features = [
     "derive",
 ], optional = true }
 psp22 = { version = "=0.2.2", default-features = false }