diff --git a/Package.swift b/Package.swift
index 5dcebac..3a86906 100644
--- a/Package.swift
+++ b/Package.swift
@@ -7,7 +7,7 @@ let package = Package(
     name: "didcomm-swift",
     platforms: [
         .iOS(.v15),
-        .macOS(.v12),
+        .macOS(.v13),
         .macCatalyst(.v15),
         .tvOS(.v15),
         .watchOS(.v8)
@@ -20,7 +20,7 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/swift-libp2p/swift-multibase.git", .upToNextMajor(from: "0.0.1")),
-        .package(url: "https://github.com/beatt83/didcore-swift.git", .upToNextMinor(from: "2.0.0")),
+        .package(url: "https://github.com/beatt83/didcore-swift.git", .upToNextMinor(from: "2.0.1")),
         .package(url: "https://github.com/beatt83/jose-swift.git", .upToNextMajor(from: "3.2.0"))
     ],
     targets: [
diff --git a/Sources/DIDCommSwift/Crypto/RecipientKeySelector.swift b/Sources/DIDCommSwift/Crypto/RecipientKeySelector.swift
index 98a2c62..b822faa 100644
--- a/Sources/DIDCommSwift/Crypto/RecipientKeySelector.swift
+++ b/Sources/DIDCommSwift/Crypto/RecipientKeySelector.swift
@@ -36,7 +36,7 @@ struct RecipientKeySelector {
         
         let document = try await didResolver.resolve(did: didFrom.did)
         
-        guard let method = document.verificationMethods.first(where: { $0.id == signFrom }) else {
+        guard let method = document.verificationMethods?.first(where: { $0.id == signFrom }) else {
             throw DIDCommError.verificationMethodNotFoundForId(signFrom)
         }
         
@@ -53,7 +53,7 @@ struct RecipientKeySelector {
         
         let document = try await didResolver.resolve(did: didFrom.did)
         
-        guard let method = document.verificationMethods.first(where: { $0.id == from }) else {
+        guard let method = document.verificationMethods?.first(where: { $0.id == from }) else {
             throw DIDCommError.verificationMethodNotFoundForId(from)
         }
         
diff --git a/Sources/DIDCommSwift/Crypto/SenderKeySelector.swift b/Sources/DIDCommSwift/Crypto/SenderKeySelector.swift
index 390440d..cfb1f12 100644
--- a/Sources/DIDCommSwift/Crypto/SenderKeySelector.swift
+++ b/Sources/DIDCommSwift/Crypto/SenderKeySelector.swift
@@ -107,7 +107,7 @@ struct SenderKeySelector {
         }
         let document = try await didResolver.resolve(did: didTo.did)
         if didTo.fragment != nil {
-            guard let verificationMethod = document.verificationMethods.first(where: { $0.id == to }) else {
+            guard let verificationMethod = document.verificationMethods?.first(where: { $0.id == to }) else {
                 return []
             }
             return [try KeyHelper.fromVerificationMethod(method: verificationMethod)]
@@ -127,7 +127,7 @@ struct SenderKeySelector {
         }
         if didTo.fragment != nil {
             guard
-                let verificationMethod = document.verificationMethods.first(where: { $0.id == to }),
+                let verificationMethod = document.verificationMethods?.first(where: { $0.id == to }),
                 let methodCurve = try? verificationMethod.getCurve(),
                 curve == methodCurve
             else {
@@ -150,7 +150,7 @@ extension DIDDocument {
         authentication?.map {
             switch $0 {
             case .stringValue(let value):
-                return verificationMethods.first { $0.id == value }
+                return verificationMethods?.first { $0.id == value }
             case .verificationMethod(let method):
                 return method
             }
@@ -161,7 +161,7 @@ extension DIDDocument {
         keyAgreement?.map {
             switch $0 {
             case .stringValue(let value):
-                return verificationMethods.first { $0.id == value }
+                return verificationMethods?.first { $0.id == value }
             case .verificationMethod(let method):
                 return method
             }