diff --git a/.github/workflows/danger.yml b/.github/workflows/danger.yml
index 1d84a139..50e07064 100644
--- a/.github/workflows/danger.yml
+++ b/.github/workflows/danger.yml
@@ -1,14 +1,13 @@
 name: Danger
 
-on:
+on: 
   pull_request:
-    branches:
-      - master
+    types: [opened, reopened, synchronize, ready_for_review]
 
 jobs:
   danger:
     name: Run Danger
-    runs-on: macOS-latest
+    runs-on: ubuntu-latest
     steps:
     - name: Checkout the Git repository
       uses: actions/checkout@v2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b00b7591..52883198 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -31,6 +31,8 @@ The changelog for `MessageKit`. Also see the [releases](https://github.com/Messa
 
 ### Removed
 
+- NSConstraintLayoutSet.swift [#1700](https://github.com/MessageKit/MessageKit/pull/1700) by [@martinpucik](https://github.com/martinpucik) 
+
 ## 3.8.0
 
 ### Added
diff --git a/README.md b/README.md
index ef300b99..932178f1 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ See [VISION.md](https://github.com/MessageKit/MessageKit/blob/master/VISION.md)
 ### [CocoaPods](https://cocoapods.org/) **Recommended**
 
 ```ruby
-# Swift 5.3
+# Swift 5.5
 pod 'MessageKit'
 ```
 
@@ -83,7 +83,7 @@ Older versions of Swift and Xcode don't support MessageKit via SPM.
 ## Requirements
 
 - **iOS 12** or later
-- **Swift 5.3** or later
+- **Swift 5.5** or later
 
 > For iOS 11 please use version 3.3.0
 
diff --git a/Sources/Models/NSConstraintLayoutSet.swift b/Sources/Models/NSConstraintLayoutSet.swift
deleted file mode 100644
index 79140928..00000000
--- a/Sources/Models/NSConstraintLayoutSet.swift
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- MIT License
- 
- Copyright (c) 2017-2019 MessageKit
- 
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
- 
- The above copyright notice and this permission notice shall be included in all
- copies or substantial portions of the Software.
- 
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- SOFTWARE.
- */
-
-import UIKit
-
-internal class NSLayoutConstraintSet {
-    
-    internal var top: NSLayoutConstraint?
-    internal var bottom: NSLayoutConstraint?
-    internal var left: NSLayoutConstraint?
-    internal var right: NSLayoutConstraint?
-    internal var centerX: NSLayoutConstraint?
-    internal var centerY: NSLayoutConstraint?
-    internal var width: NSLayoutConstraint?
-    internal var height: NSLayoutConstraint?
-    
-    internal init(top: NSLayoutConstraint? = nil, bottom: NSLayoutConstraint? = nil,
-                  left: NSLayoutConstraint? = nil, right: NSLayoutConstraint? = nil,
-                  centerX: NSLayoutConstraint? = nil, centerY: NSLayoutConstraint? = nil,
-                  width: NSLayoutConstraint? = nil, height: NSLayoutConstraint? = nil) {
-        self.top = top
-        self.bottom = bottom
-        self.left = left
-        self.right = right
-        self.centerX = centerX
-        self.centerY = centerY
-        self.width = width
-        self.height = height
-    }
-
-    /// All of the currently configured constraints
-    private var availableConstraints: [NSLayoutConstraint] {
-        let constraints = [top, bottom, left, right, centerX, centerY, width, height]
-        var available: [NSLayoutConstraint] = []
-        for constraint in constraints {
-            if let value = constraint {
-                available.append(value)
-            }
-        }
-        return available
-    }
-    
-    /// Activates all of the non-nil constraints
-    ///
-    /// - Returns: Self
-    @discardableResult
-    internal func activate() -> Self {
-        NSLayoutConstraint.activate(availableConstraints)
-        return self
-    }
-    
-    /// Deactivates all of the non-nil constraints
-    ///
-    /// - Returns: Self
-    @discardableResult
-    internal func deactivate() -> Self {
-        NSLayoutConstraint.deactivate(availableConstraints)
-        return self
-    }
-}