diff --git a/Sources/XcodeProj/Objects/SwiftPackage/XCSwiftPackageProductDependency.swift b/Sources/XcodeProj/Objects/SwiftPackage/XCSwiftPackageProductDependency.swift
index 36226eb38..c17e4c6ce 100644
--- a/Sources/XcodeProj/Objects/SwiftPackage/XCSwiftPackageProductDependency.swift
+++ b/Sources/XcodeProj/Objects/SwiftPackage/XCSwiftPackageProductDependency.swift
@@ -19,16 +19,16 @@ public class XCSwiftPackageProductDependency: PBXContainerItem, PlistSerializabl
     }
 
     /// Is it a Plugin.
-    var isPlugin: Bool {
-        productName.hasPrefix("plugin:")
-    }
+    var isPlugin: Bool
 
     // MARK: - Init
 
     public init(productName: String,
-                package: XCRemoteSwiftPackageReference? = nil) {
+                package: XCRemoteSwiftPackageReference? = nil,
+                isPlugin: Bool = false) {
         self.productName = productName
         packageReference = package?.reference
+        self.isPlugin = isPlugin
         super.init()
     }
 
@@ -36,7 +36,10 @@ public class XCSwiftPackageProductDependency: PBXContainerItem, PlistSerializabl
         let objects = decoder.context.objects
         let repository = decoder.context.objectReferenceRepository
         let container = try decoder.container(keyedBy: CodingKeys.self)
-        productName = try container.decode(String.self, forKey: .productName)
+        let rawProductName = try container.decode(String.self, forKey: .productName)
+        productName = rawProductName.replacingOccurrences(of: "plugin:", with: "")
+        isPlugin = productName != rawProductName
+
         if let packageString: String = try container.decodeIfPresent(.package) {
             packageReference = repository.getOrCreate(reference: packageString, objects: objects)
         } else {
@@ -51,7 +54,11 @@ public class XCSwiftPackageProductDependency: PBXContainerItem, PlistSerializabl
         if let package = package {
             dictionary["package"] = .string(.init(package.reference.value, comment: "XCRemoteSwiftPackageReference \"\(package.name ?? "")\""))
         }
-        dictionary["productName"] = .string(.init(productName))
+        if isPlugin {
+            dictionary["productName"] = .string(.init("plugin:" + productName))
+        } else {
+            dictionary["productName"] = .string(.init(productName))
+        }
 
         return (key: CommentedString(reference, comment: productName),
                 value: .dictionary(dictionary))
diff --git a/Tests/XcodeProjTests/Objects/SwiftPackage/XCSwiftPackageProductDependencyTests.swift b/Tests/XcodeProjTests/Objects/SwiftPackage/XCSwiftPackageProductDependencyTests.swift
index 74ba6789b..a09f302e0 100644
--- a/Tests/XcodeProjTests/Objects/SwiftPackage/XCSwiftPackageProductDependencyTests.swift
+++ b/Tests/XcodeProjTests/Objects/SwiftPackage/XCSwiftPackageProductDependencyTests.swift
@@ -19,6 +19,25 @@ final class XCSwiftPackageProductDependencyTests: XCTestCase {
         // Then
         XCTAssertEqual(got.productName, "xcodeproj")
         XCTAssertEqual(got.packageReference?.value, "packageReference")
+        XCTAssertEqual(got.isPlugin, false)
+    }
+
+    func test_initAsPlugin() throws {
+        // Given
+        let decoder = XcodeprojPropertyListDecoder()
+        let encoder = PropertyListEncoder()
+        let plist = ["reference": "reference",
+                     "productName": "plugin:xcodeproj",
+                     "package": "packageReference"]
+        let data = try encoder.encode(plist)
+
+        // When
+        let got = try decoder.decode(XCSwiftPackageProductDependency.self, from: data)
+
+        // Then
+        XCTAssertEqual(got.productName, "xcodeproj")
+        XCTAssertEqual(got.packageReference?.value, "packageReference")
+        XCTAssertEqual(got.isPlugin, true)
     }
 
     func test_plistValues() throws {
@@ -39,6 +58,25 @@ final class XCSwiftPackageProductDependencyTests: XCTestCase {
         ]))
     }
 
+    func test_plistValuesAsPlugin() throws {
+        // Given
+        let proj = PBXProj()
+        let package = XCRemoteSwiftPackageReference(repositoryURL: "repository")
+        let subject = XCSwiftPackageProductDependency(productName: "product",
+                                                      package: package,
+                                                      isPlugin: true)
+
+        // When
+        let got = try subject.plistKeyAndValue(proj: proj, reference: "reference")
+
+        // Then
+        XCTAssertEqual(got.value, .dictionary([
+            "isa": "XCSwiftPackageProductDependency",
+            "productName": "product",
+            "package": .string(.init(package.reference.value, comment: "XCRemoteSwiftPackageReference \"\(package.name ?? "")\"")),
+        ]))
+    }
+
     func test_equal() {
         // Given
         let package = XCRemoteSwiftPackageReference(repositoryURL: "repository")
@@ -53,7 +91,7 @@ final class XCSwiftPackageProductDependencyTests: XCTestCase {
 
     func test_isPlugin() {
         // Given
-        let plugin = XCSwiftPackageProductDependency(productName: "plugin:product")
+        let plugin = XCSwiftPackageProductDependency(productName: "product", isPlugin: true)
 
         // Then
         XCTAssertTrue(plugin.isPlugin)
diff --git a/Tests/XcodeProjTests/Utils/ReferenceGeneratorTests.swift b/Tests/XcodeProjTests/Utils/ReferenceGeneratorTests.swift
index e1e16914c..08a3f9760 100644
--- a/Tests/XcodeProjTests/Utils/ReferenceGeneratorTests.swift
+++ b/Tests/XcodeProjTests/Utils/ReferenceGeneratorTests.swift
@@ -141,7 +141,7 @@ private extension PBXProj {
 
     func makePluginDependency() -> PBXTargetDependency {
         let packageReference = XCRemoteSwiftPackageReference(repositoryURL: "repository")
-        let packageDependency = XCSwiftPackageProductDependency(productName: "plugin:product", package: packageReference)
+        let packageDependency = XCSwiftPackageProductDependency(productName: "product", package: packageReference, isPlugin: true)
         let targetDependency = PBXTargetDependency(product: packageDependency)
         add(object: targetDependency.productReference!.getObject()!)