diff --git a/cloud-agent/service/server/src/main/scala/org/hyperledger/identus/iam/authentication/oidc/KeycloakAuthenticator.scala b/cloud-agent/service/server/src/main/scala/org/hyperledger/identus/iam/authentication/oidc/KeycloakAuthenticator.scala
index c692b42b81..29c92ba154 100644
--- a/cloud-agent/service/server/src/main/scala/org/hyperledger/identus/iam/authentication/oidc/KeycloakAuthenticator.scala
+++ b/cloud-agent/service/server/src/main/scala/org/hyperledger/identus/iam/authentication/oidc/KeycloakAuthenticator.scala
@@ -7,7 +7,7 @@ import org.hyperledger.identus.iam.authentication.AuthenticationError.{
   InvalidCredentials
 }
 import org.hyperledger.identus.shared.utils.Traverse.*
-import pdi.jwt.{JwtZIOJson, JwtClaim, JwtOptions}
+import pdi.jwt.{JwtClaim, JwtOptions, JwtZIOJson}
 import zio.*
 import zio.json.ast.Json
 
diff --git a/pollux/prex/src/main/scala/org/hyperledger/identus/pollux/prex/PresentationDefinition.scala b/pollux/prex/src/main/scala/org/hyperledger/identus/pollux/prex/PresentationDefinition.scala
index e6bb34938c..fe801b3eca 100644
--- a/pollux/prex/src/main/scala/org/hyperledger/identus/pollux/prex/PresentationDefinition.scala
+++ b/pollux/prex/src/main/scala/org/hyperledger/identus/pollux/prex/PresentationDefinition.scala
@@ -4,7 +4,7 @@ import com.networknt.schema.{JsonSchema, SpecVersion}
 import org.hyperledger.identus.shared.json.{JsonPath, JsonPathError, JsonSchemaError, JsonSchemaUtils}
 import zio.*
 import zio.json.{JsonDecoder, JsonEncoder}
-import zio.json.ast.Json as ZioJson
+import zio.json.ast.Json
 
 opaque type JsonPathValue = String
 
@@ -20,16 +20,16 @@ object JsonPathValue {
   }
 }
 
-opaque type FieldFilter = ZioJson
+opaque type FieldFilter = Json
 
 object FieldFilter {
-  given Conversion[ZioJson, FieldFilter] = identity
+  given Conversion[Json, FieldFilter] = identity
 
-  given JsonEncoder[FieldFilter] = ZioJson.encoder
-  given JsonDecoder[FieldFilter] = ZioJson.decoder
+  given JsonEncoder[FieldFilter] = Json.encoder
+  given JsonDecoder[FieldFilter] = Json.decoder
 
   extension (f: FieldFilter)
-    def asJsonZio: ZioJson = f
+    def asJsonZio: Json = f
 
     // Json schema draft 7 must be used
     // https://identity.foundation/presentation-exchange/spec/v2.1.1/#json-schema
diff --git a/pollux/prex/src/main/scala/org/hyperledger/identus/pollux/prex/PresentationSubmissionVerification.scala b/pollux/prex/src/main/scala/org/hyperledger/identus/pollux/prex/PresentationSubmissionVerification.scala
index d39e113ca5..63eafb90c7 100644
--- a/pollux/prex/src/main/scala/org/hyperledger/identus/pollux/prex/PresentationSubmissionVerification.scala
+++ b/pollux/prex/src/main/scala/org/hyperledger/identus/pollux/prex/PresentationSubmissionVerification.scala
@@ -5,7 +5,7 @@ import org.hyperledger.identus.pollux.vc.jwt.{JWT, JwtCredential, JwtPresentatio
 import org.hyperledger.identus.shared.json.{JsonPathError, JsonSchemaValidatorImpl}
 import org.hyperledger.identus.shared.models.{Failure, StatusCode}
 import zio.*
-import zio.json.ast.Json as ZioJson
+import zio.json.ast.Json
 import zio.json.EncoderOps
 
 sealed trait PresentationSubmissionError extends Failure {
@@ -81,7 +81,7 @@ object PresentationSubmissionVerification {
   def verify(
       pd: PresentationDefinition,
       ps: PresentationSubmission,
-      rootTraversalObject: ZioJson,
+      rootTraversalObject: Json,
   )(formatVerification: ClaimFormatVerification): IO[PresentationSubmissionError, Unit] = {
     for {
       _ <- verifySubmissionId(pd, ps)
@@ -118,7 +118,7 @@ object PresentationSubmissionVerification {
 
   private def verifyInputConstraints(
       pd: PresentationDefinition,
-      entries: Seq[(String, ZioJson)]
+      entries: Seq[(String, Json)]
   ): IO[PresentationSubmissionError, Unit] = {
     val descriptorLookup = pd.input_descriptors.map(d => d.id -> d).toMap
     val descriptorWithEntry = entries.flatMap { case (id, entry) => descriptorLookup.get(id).map(_ -> entry) }
@@ -131,7 +131,7 @@ object PresentationSubmissionVerification {
 
   private def verifyInputConstraint(
       descriptor: InputDescriptor,
-      entry: ZioJson
+      entry: Json
   ): IO[PresentationSubmissionError, Unit] = {
     val mandatoryFields = descriptor.constraints.fields
       .getOrElse(Nil)
@@ -156,9 +156,9 @@ object PresentationSubmissionVerification {
   }
 
   private def extractSubmissionEntry(
-      traversalObject: ZioJson,
+      traversalObject: Json,
       descriptor: InputDescriptorMapping
-  )(formatVerification: ClaimFormatVerification): IO[PresentationSubmissionError, ZioJson] = {
+  )(formatVerification: ClaimFormatVerification): IO[PresentationSubmissionError, Json] = {
     for {
       path <- ZIO
         .fromEither(descriptor.path.toJsonPath)
@@ -179,9 +179,9 @@ object PresentationSubmissionVerification {
   }
 
   private def verifyJwtVc(
-      json: ZioJson,
+      json: Json,
       path: JsonPathValue
-  )(formatVerification: JWT => IO[String, Unit]): IO[PresentationSubmissionError, ZioJson] = {
+  )(formatVerification: JWT => IO[String, Unit]): IO[PresentationSubmissionError, Json] = {
     val format = ClaimFormatValue.jwt_vc
     for {
       jwt <- ZIO
@@ -197,9 +197,9 @@ object PresentationSubmissionVerification {
   }
 
   private def verifyJwtVp(
-      json: ZioJson,
+      json: Json,
       path: JsonPathValue
-  )(formatVerification: JWT => IO[String, Unit]): IO[PresentationSubmissionError, ZioJson] = {
+  )(formatVerification: JWT => IO[String, Unit]): IO[PresentationSubmissionError, Json] = {
     val format = ClaimFormatValue.jwt_vp
     for {
       jwt <- ZIO
diff --git a/pollux/vc-jwt/src/main/scala/org/hyperledger/identus/pollux/vc/jwt/DidJWT.scala b/pollux/vc-jwt/src/main/scala/org/hyperledger/identus/pollux/vc/jwt/DidJWT.scala
index f1358b9154..1d21906ab5 100644
--- a/pollux/vc-jwt/src/main/scala/org/hyperledger/identus/pollux/vc/jwt/DidJWT.scala
+++ b/pollux/vc-jwt/src/main/scala/org/hyperledger/identus/pollux/vc/jwt/DidJWT.scala
@@ -9,7 +9,7 @@ import org.hyperledger.identus.shared.crypto.{Ed25519KeyPair, Secp256k1PrivateKe
 import org.hyperledger.identus.shared.models.KeyId
 import zio.*
 import zio.json.{EncoderOps, JsonDecoder, JsonEncoder}
-import zio.json.ast.Json as ZioJson
+import zio.json.ast.Json
 
 import java.security.*
 import java.security.interfaces.ECPublicKey
@@ -41,9 +41,9 @@ object JwtSignerImplicits {
 }
 
 trait Signer {
-  def encode(claim: ZioJson): JWT
+  def encode(claim: Json): JWT
 
-  def generateProofForJson(payload: ZioJson, pk: PublicKey): Task[Proof]
+  def generateProofForJson(payload: Json, pk: PublicKey): Task[Proof]
 }
 
 // works with java 7, 8, 11 & bouncycastle provider
@@ -56,7 +56,7 @@ class ES256KSigner(privateKey: PrivateKey, keyId: Option[KeyId] = None) extends
     ecdsaSigner
   }
 
-  override def generateProofForJson(payload: ZioJson, pk: PublicKey): Task[Proof] = {
+  override def generateProofForJson(payload: Json, pk: PublicKey): Task[Proof] = {
     val err = Throwable("Public key must be secp256k1 EC public key")
     pk match
       case pk: ECPublicKey =>
@@ -64,7 +64,7 @@ class ES256KSigner(privateKey: PrivateKey, keyId: Option[KeyId] = None) extends
       case _ => ZIO.fail(err)
   }
 
-  override def encode(claim: ZioJson): JWT = {
+  override def encode(claim: Json): JWT = {
     val claimSet = JWTClaimsSet.parse(claim.toJson)
     val signedJwt = SignedJWT(
       keyId
@@ -84,11 +84,11 @@ class EdSigner(ed25519KeyPair: Ed25519KeyPair, keyId: Option[KeyId] = None) exte
     ed25519Signer
   }
 
-  override def generateProofForJson(payload: ZioJson, pk: PublicKey): Task[Proof] = {
+  override def generateProofForJson(payload: Json, pk: PublicKey): Task[Proof] = {
     EddsaJcs2022ProofGenerator.generateProof(payload, ed25519KeyPair)
   }
 
-  override def encode(claim: ZioJson): JWT = {
+  override def encode(claim: Json): JWT = {
     val claimSet = JWTClaimsSet.parse(claim.toJson)
 
     val signedJwt = SignedJWT(
diff --git a/pollux/vc-jwt/src/main/scala/org/hyperledger/identus/pollux/vc/jwt/JsonWebKey.scala b/pollux/vc-jwt/src/main/scala/org/hyperledger/identus/pollux/vc/jwt/JsonWebKey.scala
index c5ed29a591..6f839e29bc 100644
--- a/pollux/vc-jwt/src/main/scala/org/hyperledger/identus/pollux/vc/jwt/JsonWebKey.scala
+++ b/pollux/vc-jwt/src/main/scala/org/hyperledger/identus/pollux/vc/jwt/JsonWebKey.scala
@@ -18,6 +18,6 @@ case class JsonWebKey(
 )
 
 object JsonWebKey {
-  given jsonWebKeyEncoderCirceZioJson: JsonEncoder[JsonWebKey] = DeriveJsonEncoder.gen
-  given jsonWebKeyDecoderCirceZioJson: JsonDecoder[JsonWebKey] = DeriveJsonDecoder.gen
+  given JsonEncoder[JsonWebKey] = DeriveJsonEncoder.gen
+  given JsonDecoder[JsonWebKey] = DeriveJsonDecoder.gen
 }
diff --git a/shared/json/src/main/scala/org/hyperledger/identus/shared/json/JsonOps.scala b/shared/json/src/main/scala/org/hyperledger/identus/shared/json/JsonOps.scala
index 27aa34fcaf..5e70affd0f 100644
--- a/shared/json/src/main/scala/org/hyperledger/identus/shared/json/JsonOps.scala
+++ b/shared/json/src/main/scala/org/hyperledger/identus/shared/json/JsonOps.scala
@@ -1,21 +1,21 @@
 package org.hyperledger.identus.shared.json
 
-import zio.json.ast.Json as ZioJson
+import zio.json.ast.Json
 
 object JsonOps {
-  extension (json: ZioJson) {
-    def removeNullValues: ZioJson = json match
-      case ZioJson.Obj(fields) =>
-        ZioJson.Obj(fields.collect { case (key, value) if value != ZioJson.Null => key -> value.removeNullValues })
-      case ZioJson.Arr(elements) =>
-        ZioJson.Arr(elements.map(_.removeNullValues))
+  extension (json: Json) {
+    def removeNullValues: Json = json match
+      case Json.Obj(fields) =>
+        Json.Obj(fields.collect { case (key, value) if value != Json.Null => key -> value.removeNullValues })
+      case Json.Arr(elements) =>
+        Json.Arr(elements.map(_.removeNullValues))
       case other => other
 
-    def removeField(name: String): ZioJson = json match
-      case ZioJson.Obj(fields) =>
-        ZioJson.Obj(fields.filterNot { case (key, value) => key == name })
-      case ZioJson.Arr(elements) =>
-        ZioJson.Arr(elements.map(_.removeField(name)))
+    def removeField(name: String): Json = json match
+      case Json.Obj(fields) =>
+        Json.Obj(fields.filterNot { case (key, value) => key == name })
+      case Json.Arr(elements) =>
+        Json.Arr(elements.map(_.removeField(name)))
       case other => other
   }
 }