diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 268d6ae..df74c65 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -6,9 +6,13 @@ on:
 
 jobs:
   build:
-    runs-on: macos-11.0
+    runs-on: macos-latest
 
     steps:
+      - uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: latest-stable
+
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
diff --git a/Cartfile b/Cartfile
index 558afd3..ceec564 100644
--- a/Cartfile
+++ b/Cartfile
@@ -1,2 +1,2 @@
-github "realm/realm-cocoa" ~> 10.5
+github "realm/realm-cocoa" ~> 10.21
 github "ReactiveX/RxSwift" ~> 6.1
diff --git a/Cartfile.resolved b/Cartfile.resolved
index c04edab..1191c58 100644
--- a/Cartfile.resolved
+++ b/Cartfile.resolved
@@ -1,2 +1,2 @@
-github "ReactiveX/RxSwift" "6.0.0"
-github "realm/realm-cocoa" "v10.5.0"
\ No newline at end of file
+github "ReactiveX/RxSwift" "6.5.0"
+github "realm/realm-cocoa" "v10.21.1"
diff --git a/Examples/Podfile.lock b/Examples/Podfile.lock
index 47c03b0..9f29b68 100644
--- a/Examples/Podfile.lock
+++ b/Examples/Podfile.lock
@@ -1,20 +1,20 @@
 PODS:
-  - Realm (10.7.4):
-    - Realm/Headers (= 10.7.4)
-  - Realm/Headers (10.7.4)
-  - RealmSwift (10.7.4):
-    - Realm (= 10.7.4)
-  - RxCocoa (6.1.0):
-    - RxRelay (= 6.1.0)
-    - RxSwift (= 6.1.0)
-  - RxRealm (5.0.1):
-    - Realm (~> 10.7)
-    - RealmSwift (~> 10.7)
-    - RxCocoa (~> 6.0)
-    - RxSwift (~> 6.0)
-  - RxRelay (6.1.0):
-    - RxSwift (= 6.1.0)
-  - RxSwift (6.1.0)
+  - Realm (10.21.1):
+    - Realm/Headers (= 10.21.1)
+  - Realm/Headers (10.21.1)
+  - RealmSwift (10.21.1):
+    - Realm (= 10.21.1)
+  - RxCocoa (6.5.0):
+    - RxRelay (= 6.5.0)
+    - RxSwift (= 6.5.0)
+  - RxRealm (5.0.4):
+    - Realm (~> 10.21)
+    - RealmSwift (~> 10.21)
+    - RxCocoa (~> 6.1)
+    - RxSwift (~> 6.1)
+  - RxRelay (6.5.0):
+    - RxSwift (= 6.5.0)
+  - RxSwift (6.5.0)
 
 DEPENDENCIES:
   - RxRealm (from `../`)
@@ -32,13 +32,13 @@ EXTERNAL SOURCES:
     :path: "../"
 
 SPEC CHECKSUMS:
-  Realm: f08ce1a85649a41303ecfe1cbd914c62e9e6d710
-  RealmSwift: 60ec49d165f23d040ab48811d8dd177e09baf4d3
-  RxCocoa: 5c51f02d562cbd94629f6c26cf0c80fe4ab8d343
-  RxRealm: fc4a4bc4956f2b7be27412a22eda143785da0c85
-  RxRelay: 483e1a19fad961b41f0b0c0bee506f46c1ae14fe
-  RxSwift: a834e5c538e89eca0cae86f403f4fbf0336786ce
+  Realm: 44b41c3ae39e3ecfded71a04434bfde066c7b317
+  RealmSwift: dbf9a4eb06e0c929d51c4ef2e8f951bca541feab
+  RxCocoa: 94f817b71c07517321eb4f9ad299112ca8af743b
+  RxRealm: 666c8785327fe2fff972a3093b35dc7055c1ca38
+  RxRelay: 1de1523e604c72b6c68feadedd1af3b1b4d0ecbd
+  RxSwift: 5710a9e6b17f3c3d6e40d6e559b9fa1e813b2ef8
 
 PODFILE CHECKSUM: c18aa0767a67d16eff537312e81255933c8a0f4e
 
-COCOAPODS: 1.10.1
+COCOAPODS: 1.11.2
diff --git a/Package.resolved b/Package.resolved
index d35d30d..8fb9fbc 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -6,8 +6,8 @@
         "repositoryURL": "https://github.com/realm/realm-cocoa.git",
         "state": {
           "branch": null,
-          "revision": "c236b2c1270fe41ba7c101a1d17ef56494987cb9",
-          "version": "10.5.0"
+          "revision": "39177714b95bb5b1b29fffe28f1c7da77eef8e8b",
+          "version": "10.21.1"
         }
       },
       {
@@ -15,8 +15,8 @@
         "repositoryURL": "https://github.com/realm/realm-core",
         "state": {
           "branch": null,
-          "revision": "7390723ae39b432bd00f093ea84e3b79534a202c",
-          "version": "10.3.2"
+          "revision": "f1976f0d96d9b06fbe0afbd60090b1c3966b1e23",
+          "version": "11.8.0"
         }
       },
       {
@@ -24,8 +24,8 @@
         "repositoryURL": "https://github.com/ReactiveX/RxSwift.git",
         "state": {
           "branch": null,
-          "revision": "c8742ed97fc2f0c015a5ea5eddefb064cd7532d2",
-          "version": "6.0.0"
+          "revision": "b4307ba0b6425c0ba4178e138799946c3da594f8",
+          "version": "6.5.0"
         }
       }
     ]
diff --git a/Package.swift b/Package.swift
index 086f3fb..efd704b 100644
--- a/Package.swift
+++ b/Package.swift
@@ -15,8 +15,8 @@ let package = Package(name: "RxRealm",
 
                       dependencies: [
                         // Dependencies declare other packages that this package depends on.
-                        .package(url: "https://github.com/realm/realm-cocoa.git", .upToNextMajor(from: "10.5.0")),
-                        .package(url: "https://github.com/ReactiveX/RxSwift.git", .upToNextMajor(from: "6.1.0"))
+                        .package(url: "https://github.com/realm/realm-cocoa.git", .upToNextMajor(from: "10.21.1")),
+                        .package(url: "https://github.com/ReactiveX/RxSwift.git", .upToNextMajor(from: "6.5.0"))
                       ],
 
                       targets: [
diff --git a/RxRealm.podspec b/RxRealm.podspec
index 83ebb5f..8dee75d 100644
--- a/RxRealm.podspec
+++ b/RxRealm.podspec
@@ -24,8 +24,8 @@ Pod::Spec.new do |s|
   s.source_files = "Sources/RxRealm/*.swift"
 
   s.frameworks = "Foundation"
-  s.dependency "Realm", "~> 10.7"
-  s.dependency "RealmSwift", "~> 10.7"
+  s.dependency "Realm", "~> 10.21"
+  s.dependency "RealmSwift", "~> 10.21"
   s.dependency "RxSwift", "~> 6.1"
   s.dependency "RxCocoa", "~> 6.1"
 end
diff --git a/Sources/RxRealm/RxRealm.swift b/Sources/RxRealm/RxRealm.swift
index 2f0f405..a40affe 100644
--- a/Sources/RxRealm/RxRealm.swift
+++ b/Sources/RxRealm/RxRealm.swift
@@ -32,7 +32,9 @@ public protocol NotificationEmitter {
 
    - returns: `NotificationToken` - retain this value to keep notifications being emitted for the current collection.
    */
-  func observe(on queue: DispatchQueue?, _ block: @escaping (RealmCollectionChange<Self>) -> Void) -> NotificationToken
+  func observe(keyPaths: [String]?,
+               on queue: DispatchQueue?,
+               _ block: @escaping (RealmCollectionChange<Self>) -> Void) -> NotificationToken
 
   func toArray() -> [ElementType]
 
@@ -111,18 +113,20 @@ public extension ObservableType where Element: NotificationEmitter {
 
    - parameter from: A Realm collection of type `Element`: either `Results`, `List`, `LinkingObjects` or `AnyRealmCollection`.
    - parameter synchronousStart: whether the resulting `Observable` should emit its first element synchronously (e.g. better for UI bindings)
+   - parameter keyPaths: Only properties contained in the key paths array will trigger
+                              the block when they are modified. See description above for more detail on linked properties.
    - parameter queue: The serial dispatch queue to receive notification on. If `nil`, notifications are delivered to the current thread.
 
    - returns: `Observable<Element>`, e.g. when called on `Results<Model>` it will return `Observable<Results<Model>>`, on a `List<User>` it will return `Observable<List<User>>`, etc.
    */
-  static func collection(from collection: Element, synchronousStart: Bool = true, on queue: DispatchQueue? = nil)
+  static func collection(from collection: Element, synchronousStart: Bool = true, keyPaths: [String]? = nil, on queue: DispatchQueue? = nil)
     -> Observable<Element> {
     return Observable.create { observer in
       if synchronousStart {
         observer.onNext(collection)
       }
 
-      let token = collection.observe(on: queue) { changeset in
+      let token = collection.observe(keyPaths: keyPaths, on: queue) { changeset in
 
         let value: Element
 
diff --git a/project-spm.yml b/project-spm.yml
index 86cdd90..934f3f6 100644
--- a/project-spm.yml
+++ b/project-spm.yml
@@ -98,7 +98,7 @@ packages:
     from: 6.0.0
   Realm:
     url: https://github.com/realm/realm-cocoa.git
-    from: 10.5.0
+    from: 10.21.1
 targets:
   RxRealm iOS:
     settings: