diff --git a/.github/workflows/evaluate-benchmark.yml b/.github/workflows/evaluate-benchmark.yml
index e1fd950b..9b9d7c4a 100644
--- a/.github/workflows/evaluate-benchmark.yml
+++ b/.github/workflows/evaluate-benchmark.yml
@@ -34,7 +34,7 @@ jobs:
         id: set-benchmark-filename
         run: echo "BASE_BENCHMARK=${GITHUB_BASE_REF}" | sed 's:/:-:g' | sed 's:\.:-:g' >> $GITHUB_OUTPUT
       - name: Download base benchmark report for ${{ github.base_ref }}
-        uses: dawidd6/action-download-artifact@v3
+        uses: dawidd6/action-download-artifact@v4
         with:
           name: ${{ steps.set-benchmark-filename.outputs.BASE_BENCHMARK }}
           branch: ${{ github.base_ref }}
@@ -54,7 +54,7 @@ jobs:
           issue-number: ${{ github.event.number }}
           body-path: benchmark/benchmark_report.txt
       - name: Upload full report artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: benchmark-report
           path: benchmark/benchmark_full_report.txt
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0757a011..6eb8c68e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ Changelog for `odra`.
 - `OdraContract` trait grouping module-related structures.
 ### Changed
 - `Deployer` is no longer implemented for `HostRef` but for `OdraContract`.
+- `chainspec.toml` file has been updated to be compatible with the latest version
+of `casper-execution-engine`.
 
 ## [1.2.0] - 2024-07-30
 ### Added
diff --git a/odra-casper/test-vm/resources/chainspec.toml b/odra-casper/test-vm/resources/chainspec.toml
index 63b7c8dd..9d8e9994 100644
--- a/odra-casper/test-vm/resources/chainspec.toml
+++ b/odra-casper/test-vm/resources/chainspec.toml
@@ -1,6 +1,6 @@
 [protocol]
 # Protocol version.
-version = '1.5.6'
+version = '1.5.8'
 # Whether we need to clear latest blocks back to the switch block just before the activation point or not.
 hard_reset = true
 # This protocol version becomes active at this point.
@@ -70,6 +70,8 @@ max_associated_keys = 100
 max_runtime_call_stack_height = 12
 # Minimum allowed delegation amount in motes
 minimum_delegation_amount = 500_000_000_000
+# Minimum allowed bid amount in motes
+minimum_bid_amount = 10_000_000_000_000
 # Global state prune batch size (0 = this feature is off)
 prune_batch_size = 0
 # Enables strict arguments checking when calling a contract; i.e. that all non-optional args are provided and of the correct `CLType`.
@@ -265,7 +267,7 @@ wasmless_transfer_cost = 100_000_000
 [system_costs.auction_costs]
 get_era_validators = 10_000
 read_seigniorage_recipients = 10_000
-add_bid = 2_500_000_000
+add_bid = 5_000_000_000_000
 withdraw_bid = 2_500_000_000
 delegate = 2_500_000_000
 undelegate = 2_500_000_000
@@ -294,4 +296,4 @@ get_refund_purse = 10_000
 finalize_payment = 10_000
 
 [system_costs.standard_payment_costs]
-pay = 10_000
\ No newline at end of file
+pay = 10_000