diff --git a/listings/ch03-optimisations/store_using_packing/Scarb.toml b/listings/ch03-optimisations/store_using_packing/Scarb.toml
index eb0394b7..c3801a07 100644
--- a/listings/ch03-optimisations/store_using_packing/Scarb.toml
+++ b/listings/ch03-optimisations/store_using_packing/Scarb.toml
@@ -3,6 +3,6 @@ name = "store_using_packing"
 version = "0.1.0"
 
 [dependencies]
-starknet = ">=2.1.0"
+starknet = ">=2.2.0"
 
 [[target.starknet-contract]]
\ No newline at end of file
diff --git a/listings/ch03-optimisations/store_using_packing/src/packing.cairo b/listings/ch03-optimisations/store_using_packing/src/packing.cairo
index e79a8300..a7f5fbce 100644
--- a/listings/ch03-optimisations/store_using_packing/src/packing.cairo
+++ b/listings/ch03-optimisations/store_using_packing/src/packing.cairo
@@ -68,10 +68,6 @@ mod tests {
     use starknet::class_hash::Felt252TryIntoClassHash;
 
     use debug::PrintTrait;
-    use option::OptionTrait;
-    use traits::{Into, TryInto};
-    use result::ResultTrait;
-    use array::{ArrayTrait, SpanTrait};
 
     #[test]
     #[available_gas(20000000)]