diff --git a/crates/mempool_test_utils/src/starknet_api_test_utils.rs b/crates/mempool_test_utils/src/starknet_api_test_utils.rs
index 666cb1720c3..99a9686539a 100644
--- a/crates/mempool_test_utils/src/starknet_api_test_utils.rs
+++ b/crates/mempool_test_utils/src/starknet_api_test_utils.rs
@@ -336,6 +336,10 @@ impl Contract {
         self.contract.cairo_version()
     }
 
+    pub fn sierra(&self) -> SierraContractClass {
+        self.contract.get_sierra()
+    }
+
     pub fn raw_class(&self) -> String {
         self.contract.get_raw_class()
     }
diff --git a/crates/starknet_integration_tests/src/state_reader.rs b/crates/starknet_integration_tests/src/state_reader.rs
index ca88fb9cb3b..9c5eb085d67 100644
--- a/crates/starknet_integration_tests/src/state_reader.rs
+++ b/crates/starknet_integration_tests/src/state_reader.rs
@@ -37,7 +37,7 @@ use starknet_api::block::{
 };
 use starknet_api::core::{ChainId, ClassHash, ContractAddress, Nonce, SequencerContractAddress};
 use starknet_api::deprecated_contract_class::ContractClass as DeprecatedContractClass;
-use starknet_api::state::{StorageKey, ThinStateDiff};
+use starknet_api::state::{SierraContractClass, StorageKey, ThinStateDiff};
 use starknet_api::transaction::fields::Fee;
 use starknet_api::{contract_address, felt};
 use starknet_client::reader::PendingData;
@@ -121,6 +121,7 @@ fn initialize_papyrus_test_state(
 
     let contract_classes_to_retrieve =
         test_defined_accounts.into_iter().chain(default_test_contracts).chain([erc20_contract]);
+    let sierra_vec: Vec<_> = prepare_sierra_classes(contract_classes_to_retrieve.clone());
     let (cairo0_contract_classes, cairo1_contract_classes) =
         prepare_compiled_contract_classes(contract_classes_to_retrieve);
 
@@ -129,6 +130,7 @@ fn initialize_papyrus_test_state(
         state_diff,
         &cairo0_contract_classes,
         &cairo1_contract_classes,
+        &sierra_vec,
     )
 }
 
@@ -157,6 +159,18 @@ fn prepare_state_diff(
     state_diff_builder.build()
 }
 
+fn prepare_sierra_classes(
+    contract_classes_to_retrieve: impl Iterator<Item = Contract>,
+) -> Vec<(ClassHash, SierraContractClass)> {
+    let mut sierra_contract_classes = Vec::new();
+    for contract in contract_classes_to_retrieve {
+        if contract.cairo_version() == CairoVersion::Cairo1 {
+            sierra_contract_classes.push((contract.class_hash(), contract.sierra()));
+        }
+    }
+    sierra_contract_classes
+}
+
 fn prepare_compiled_contract_classes(
     contract_classes_to_retrieve: impl Iterator<Item = Contract>,
 ) -> ContractClassesMap {
@@ -189,6 +203,7 @@ fn write_state_to_papyrus_storage(
     state_diff: ThinStateDiff,
     cairo0_contract_classes: &[(ClassHash, DeprecatedContractClass)],
     cairo1_contract_classes: &[(ClassHash, CasmContractClass)],
+    cairo1_sierra: &[(ClassHash, SierraContractClass)],
 ) {
     let block_number = BlockNumber(0);
     let block_header = test_block_header(block_number);
@@ -200,6 +215,7 @@ fn write_state_to_papyrus_storage(
     for (class_hash, casm) in cairo1_contract_classes {
         write_txn = write_txn.append_casm(class_hash, casm).unwrap();
     }
+
     write_txn
         .append_header(block_number, &block_header)
         .unwrap()
@@ -207,7 +223,14 @@ fn write_state_to_papyrus_storage(
         .unwrap()
         .append_state_diff(block_number, state_diff)
         .unwrap()
-        .append_classes(block_number, &[], &cairo0_contract_classes)
+        .append_classes(
+            block_number,
+            &(cairo1_sierra
+                .iter()
+                .map(|(class_hash, sierra)| (*class_hash, sierra))
+                .collect::<Vec<(ClassHash, &SierraContractClass)>>()),
+            &cairo0_contract_classes,
+        )
         .unwrap()
         .commit()
         .unwrap();