diff --git a/Package.resolved b/Package.resolved
index 896cf0e..486a484 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -6,8 +6,8 @@
         "repositoryURL": "https://github.com/EricRabil/Swexy",
         "state": {
           "branch": null,
-          "revision": "a9d808e3f53c57ddab99c1d1643778d3b6a36187",
-          "version": "1.0.1"
+          "revision": "e8f656e5f1d1cad30f99b259d4d50e1e05c8a9f8",
+          "version": "1.0.4"
         }
       }
     ]
diff --git a/Package.swift b/Package.swift
index 5e74c0f..9586f23 100644
--- a/Package.swift
+++ b/Package.swift
@@ -14,7 +14,7 @@ let package = Package(
     dependencies: [
         // Dependencies declare other packages that this package depends on.
         // .package(url: /* package url */, from: "1.0.0"),
-        .package(url: "https://github.com/EricRabil/Swexy", .upToNextMajor(from: "1.0.1"))
+        .package(url: "https://github.com/EricRabil/Swexy", .upToNextMajor(from: "1.0.4"))
     ],
     targets: [
         // Targets are the basic building blocks of a package. A target can define a module or a test suite.
diff --git a/Sources/Pwomise/Extensions/SubjectStream+OncePromise.swift b/Sources/Pwomise/Extensions/SubjectStream+OncePromise.swift
index 33c6407..22c78c3 100644
--- a/Sources/Pwomise/Extensions/SubjectStream+OncePromise.swift
+++ b/Sources/Pwomise/Extensions/SubjectStream+OncePromise.swift
@@ -5,10 +5,12 @@
 //  Created by Eric Rabil on 8/24/21.
 //
 
+#if canImport(Combine)
+
 import Foundation
 import Swexy
 
-@available(macOS 10.15, *)
+@available(macOS 10.15, iOS 13.0, *)
 public extension SubjectStream {
     @discardableResult
     func oncePromise(where valid: @escaping (Element) -> Bool) -> Promise<Element> {
@@ -17,3 +19,5 @@ public extension SubjectStream {
         }
     }
 }
+
+#endif