diff --git a/go.mod b/go.mod
index 1ba987d..95ace44 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ require (
 	git.frostfs.info/TrueCloudLab/frostfs-contract v0.18.1-0.20231218084346-bce7ef18c83b
 	git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20230531082742-c97d21411eb6
 	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20231107114540-ab75edd70939
-	git.frostfs.info/TrueCloudLab/policy-engine v0.0.0-20240129064140-8d21ab2d99d9
+	git.frostfs.info/TrueCloudLab/policy-engine v0.0.0-20240206111236-8354a074c4df
 	git.frostfs.info/TrueCloudLab/zapjournald v0.0.0-20240124114243-cb2e66427d02
 	github.com/aws/aws-sdk-go v1.44.6
 	github.com/bluele/gcache v0.0.2
diff --git a/go.sum b/go.sum
index 850125a..ca5d06c 100644
--- a/go.sum
+++ b/go.sum
@@ -48,8 +48,8 @@ git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20231107114540-ab75edd70939
 git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20231107114540-ab75edd70939/go.mod h1:t1akKcUH7iBrFHX8rSXScYMP17k2kYQXMbZooiL5Juw=
 git.frostfs.info/TrueCloudLab/hrw v1.2.1 h1:ccBRK21rFvY5R1WotI6LNoPlizk7qSvdfD8lNIRudVc=
 git.frostfs.info/TrueCloudLab/hrw v1.2.1/go.mod h1:C1Ygde2n843yTZEQ0FP69jYiuaYV0kriLvP4zm8JuvM=
-git.frostfs.info/TrueCloudLab/policy-engine v0.0.0-20240129064140-8d21ab2d99d9 h1:hkDIg6vzV1c1pyt5uj9EiBikHqKczfoNpPhwWvXaNf8=
-git.frostfs.info/TrueCloudLab/policy-engine v0.0.0-20240129064140-8d21ab2d99d9/go.mod h1:YVL7yFaT0QNSpA0z+RHudLvrLwT+lsFYGyBSVc1ustI=
+git.frostfs.info/TrueCloudLab/policy-engine v0.0.0-20240206111236-8354a074c4df h1:FLk850Ti+aj9vdJTUPvtS4KDIpISze9vTNKV15WIbME=
+git.frostfs.info/TrueCloudLab/policy-engine v0.0.0-20240206111236-8354a074c4df/go.mod h1:YVL7yFaT0QNSpA0z+RHudLvrLwT+lsFYGyBSVc1ustI=
 git.frostfs.info/TrueCloudLab/rfc6979 v0.4.0 h1:M2KR3iBj7WpY3hP10IevfIB9MURr4O9mwVfJ+SjT3HA=
 git.frostfs.info/TrueCloudLab/rfc6979 v0.4.0/go.mod h1:okpbKfVYf/BpejtfFTfhZqFP+sZ8rsHrP8Rr/jYPNRc=
 git.frostfs.info/TrueCloudLab/tzhash v1.8.0 h1:UFMnUIk0Zh17m8rjGHJMqku2hCgaXDqjqZzS4gsb4UA=
diff --git a/internal/frostfs/policy/morph_rule_chain_storage.go b/internal/frostfs/policy/morph_rule_chain_storage.go
index 9148c56..38df353 100644
--- a/internal/frostfs/policy/morph_rule_chain_storage.go
+++ b/internal/frostfs/policy/morph_rule_chain_storage.go
@@ -1,7 +1,6 @@
 package policy
 
 import (
-	"encoding/json"
 	"fmt"
 
 	policycontract "git.frostfs.info/TrueCloudLab/frostfs-contract/policy"
@@ -76,7 +75,7 @@ func (c *MorphRuleChainStorage) ListMorphRuleChains(name chain.Name, target engi
 	list = make([]*chain.Chain, len(listChains))
 	for i, listChain := range listChains {
 		var item chain.Chain
-		if err = json.Unmarshal(listChain, &item); err != nil {
+		if err = item.DecodeBytes(listChain); err != nil {
 			return nil, fmt.Errorf("unmarshal chain: %w", err)
 		}
 		list[i] = &item